EU nationals who have made the UK their home should be able to vote in the referendum on Europe, according to a Scottish Labour leadership candidate.

Kezia Dugdale addressed the issue during a speech in Glasgow.
She said it would be "unfair" to exclude EU citizens from such a fundamental decision.
Earlier this week, No 10 said citizens from most EU countries living in the UK would not get a vote on whether or not to sever ties with Brussels.
The franchise for the referendum, which is expected by the end of 2017, will be based on that for a general election - meaning Irish, Maltese and Cypriots resident in the UK will get a vote, but other EU citizens will not.
Ms Dugdale claimed that last September's referendum on Scottish independence was enhanced by the participation of around 90,000 EU nationals registered to take part in the ballot.
"Put simply, I believe EU nationals who have chosen to live their life here, and make the UK their home, should have the right to vote in a referendum on the future of the country," she said.
The Lothians MSP - the Scottish party's deputy leader - set out her position in a keynote speech to the Scottish Fabians, in which she also argued that Scottish Labour has to be seen as a party with ideas for the future rather than stuck in the past.
She told the audience she would be campaigning to stay in Europe and keep the "strong ties" with the UK's neighbours.
She said that referendums should be conducted "as inclusively and democratically as possible" and argued that 16 and 17-year-olds should be able to vote in the EU referendum, as they did in the Scottish independence ballot.
She said: "We as a country benefit from the free movement of people across Europe, and we should not continue to enjoy this freedom while restricting political participation.
"Voting rights are a matter of democratic principle, and I strongly feel it is unfair to exclude EU nationals from a fundamental referendum.
"The referendum reinvigorated political participation in Scotland. A referendum on Europe can afford us the same opportunity."
Ms Dugdale is expected to face a challenge from Labour MSP Ken Macintosh in the bid to replace outgoing Scottish Labour leader Jim Murphy.
Mr Murphy is to step down from the post next month in the wake of the party's poor general election performance, in which it lost all but one of its MPs north of the border.
Reflecting on the "agonising" defeat, Ms Dugdale warned against a return to "business as usual" for the party.
She said: "Politics in Scotland has now changed quite fundamentally and we have but one chance to get it. And get it we must."
Stephen Gethins MP, the SNP's Europe spokesman at Westminster, said: "It's absolutely vital the referendum on Europe is as inclusive as possible - following the example of Scotland's referendum last year - which is why the SNP has been leading the fight against this Tory Government's attempt to silence the voices of our EU nationals.
"I am pleased that Labour in Scotland now appear to be backing the SNP position on allowing our young people and EU nationals the right to vote. I now hope that Labour at Westminster will follow suit and join the SNP in opposing this unfair and discriminatory policy."


Plans for a new £11m facility for Royal Navy reservists in Cardiff Bay have been revealed.

The building, on land next to the main security entrance to the dock, would include state-of-the-art training and classroom suites, accommodation and social and fitness facilities.
There would also be waterfront access and docking facilities for warships.
The Royal Navy said it would "meet the aspirations of the UK's reserves forces for the next 50 years".
Vice Adm Jonathan Woodcock, the Second Sea Lord, said: "I am delighted to announce the development of a reserve hub in Cardiff Bay.
"The Royal Navy has a strong connection to south Wales and this investment reflects the Royal Navy's continued commitment to the area."
The new site would offer shared accommodation for three naval units - the RNR Unit HMS Cambria, The Royal Marine Reserves Cardiff Detachment and the Wales URNU.
Cdr Steve Fry, commanding officer of the local RNR unit HMS Cambria, said: "We are very excited about this project.
"This significant investment by the Royal Navy in Wales will provide great opportunities for our reservists and for anyone wishing to be part of the reserve forces."
A planning application will be submitted in the new year, with work on the building due to start next year and be completed by 2019.
The project would be delivered by the Reserve Forces' & Cadets' Association for Wales in partnership with the Royal Navy and Associated British Ports.


Thousands of pounds' worth of cars and machinery have been seized by police from a ram-raid gang that used JCB diggers to rip out cash machines.

Five men were jailed in March for the £400,000 spree of raids and burglaries across the east of England.
About 140 officers from Bedfordshire, Cambridgeshire, Norfolk and two other units swooped on properties linked to the men on Wednesday.
It is thought the gang bought the goods with money from the robberies.
Police seized an Audi A5, a pick-up truck, a caravan, quad bikes and heavy machinery including diggers from properties in Wisbech in Cambridgeshire, Potton in Bedfordshire and Upwell in Norfolk.
Cannabis factories, with a combined street value between £18,000 and £54,000, were also discovered at the Potton and Upwell properties.
Police said the properties were connected to Joseph Upton, John Smith and Albert Smith.
Along with John Christopher Smith and Alfred Stanley, they were sentenced to 22 years for carrying out ram-raids at 12 banks in 2012 across Cambridgeshire, Lincolnshire, Norfolk and Suffolk.
They stole more than £300,000 from cash machines and cars and jewellery more than £100,000 during burglaries.
Damage caused in the ram-raids was estimated at costing about £250,000 to repair.
The courts will eventually decide what goods the gang accumulated from their wrong-doing and if they should be confiscated.
Det Ch Insp Chris Balmer, from the Eastern Region Special Operations Unit, which helped to serve the warrants, said the ram-raids affected "rural communities who lost their access to cash machines" and those who had "cars and machinery stolen by the gang in order to carry out the crimes".
"We will continue to pursue criminals after they have been convicted at court in order to strip them of any assets they may have gained," he said.


France's opposition conservative UMP Party has made big gains in local elections, at the expense of the ruling Socialists.

The UMP, led by ex-President Nicolas Sarkozy, boosted the number of councils it controls from 40 to 67 in the vote.
President Francois Hollande's Socialists and other leftists won 34 councils - down from 61 previously.
Marine Le Pen's far-right National Front (FN) won at least 60 seats but failed to get control of any council.
The elections are seen as a key test of public opinion ahead of the 2017 presidential election.
Paris and Lyon, France's two biggest cities, did not take part in Sunday's election.
Mr Sarkozy, who secured the UMP leadership last November, said "never... has our political family won so many councils".
He told his supporters that voters had "massively rejected the policies of Francois Hollande and his government".
Bastions of the Socialists like the Nord department around Lille swung to the right, as did President Hollande's own fiefdom of the Correze in central France.
More than 90% of the results have been counted for the 4,108 council seats. Local councillors have responsibility for schools, roads and social services in their areas.
As ever in France's two-round elections, voters from left and right united in round two to keep the FN from power, the BBC's Hugh Schofield in Paris reports.
Ms Le Pen hailed a "historic" day for the FN, saying: "I thank all our voters for this magnificent success."
"The goal is near, reaching power and applying our ideas to redress France."
The FN made especially strong gains in Pas-de-Calais, in the far north, and Gard, in the south.
But the two-round system meant that the FN's strong showing in the first round - a quarter of the total vote - did not translate into seats.
The FN won the European elections in France last year, and surveys suggest that Ms Le Pen could reach the second round run-off in the 2017 presidential election.
Our correspondent says the FN's exclusion from mainstream politics is part of its attraction to disillusioned voters.
It had only one departmental council seat before these elections - but now it has 62. That is still only 1.55% of the total counted so far.
French Prime Minister Manuel Valls said the French people "have declared... their anger at a daily life that is too difficult". He vowed to redouble efforts to boost the economy, and said his focus was "jobs, jobs, jobs".
He added that the rise in the FN's popularity was "a sign of a lasting upheaval of our political landscape and we will all need to draw lessons from it".
Half of the 40-million-strong French electorate abstained from voting - a figure that was, however, better than the 55.3% abstention rate in the last local elections in 2011.
(Based on 3,990 seats, out of 4,108 in total)
Source: French Interior Ministry


Last season's runners-up Liverpool will begin their EFL Cup campaign away at Championship side Burton Albion.

Manchester City beat Jurgen Klopp's side 3-1 on penalties after a 1-1 draw at Wembley to win the cup last season.
Chelsea will face either Bristol Rovers or Bristol City, while Ronald Koeman's Everton will host League Two Yeovil.
Thirteen Premier League clubs - all of whom are seeded - join the competition in round two, as do Newcastle United and Norwich City.
The seven top-flight clubs involved in European competitions will come in for the third round.
There were also home ties for Watford, Sunderland and Crystal Palace, who begin against Gillingham, Shrewsbury and Blackpool respectively.
Bournemouth face a long midweek trip to League Two Morecambe, while Premier League newcomers Hull will visit Exeter.
All ties are to be played the week commencing 22 August.
EFL Cup second-round draw
QPR v Rochdale
Scunthorpe v Cardiff/Bristol City* (see note below)
Watford v Gillingham
Peterborough v Swansea
Everton v Yeovil
Millwall v Nottingham Forest
Sunderland v Shrewsbury
Luton v Leeds
Chelsea v Bristol Rovers/Bristol City* (see note below)
Burton v Liverpool
Blackburn v Crewe
Accrington v Burnley
Crystal Palace v Blackpool
Morecambe v Bournemouth
Preston v Oldham
Oxford v Brighton
Reading v MK Dons
Fulham v Middlesbrough
Newcastle v Cheltenham
Exeter v Hull
Derby v Carlisle
Northampton v West Brom
Wolves v Cambridge
Stevenage v Stoke
Norwich v Coventry
*Bristol Rovers' match against Cardiff City on Thursday will affect the draw seedings. If Cardiff win, they will be seeded and will visit Scunthorpe United, with Bristol City going to Chelsea. If Bristol Rovers win, they will be unseeded and will be away to Chelsea, with Bristol City away to Scunthorpe.
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Two boys were rescued off the Vale of Glamorgan coast after boarding construction bags they had found.

The pair, aged about 12, had pushed the bags out to sea off Penarth Pier on Sunday afternoon but found themselves in difficulty due to offshore winds.
Their friend realised they were in trouble and contacted the coastguard.
The RNLI said the pair were safe and well, but "wet and cold" and were taken back to the station to warm up and given drinks and chocolate.
A spokesman said: "The boys were lucky that their friends quickly called 999. With the offshore breeze the boys were quickly heading out to sea, and time in this rescue was absolutely critical.
"They had no life jackets available, and only thin summer clothes on.
"Had they been in the water for much longer, or drifted further the outcome could well have been more serious."


Firefighters have rescued 17 people from a six-storey block of flats in Glasgow's west end after a serious fire left them trapped in the building.

Crews were called to the blaze at a building in Stewartville Street, in Partick, at about 12:15.
The fire broke out in a communal area of the block. Four people were treated at the scene for the effects of smoke inhalation.
The blaze triggered a large response from the emergency services.
A spokesman for the Scottish Fire and Rescue Service said: "On arrival crews found a well-developed fire on the third floor of a six-storey residential block of flats with residents unable to leave the building.
"Firefighters quickly brought the fire under control, whilst at the same time rescuing 17 people from the property, some of whom were suffering from slight smoke inhalation and minor injuries."
Crews worked through the night to deal with any fire spread and make the scene safe.
A spokeswoman for Police Scotland said: "About 25 to 30 persons were evacuated."
The Scottish Ambulance Service sent four resources from their special operations response team, two A&E ambulances and an ambulance car.
A spokesman said: "We did not transport anyone to hospital. We dealt with smoke inhalation."


A landmark EU-Canada free trade deal called Ceta has hit a serious snag after a Belgian region rejected it, threatening the signing this month.

Parliament in French-speaking Wallonia voted to prevent Belgium's government from signing the draft deal.
EU trade ministers are to decide on Ceta next Tuesday. If they all approve it, the deal can be signed with Canada on 27 October.
Ceta is the EU's most ambitious trade deal to date, lifting most barriers.
Walloon leader Paul Magnette said he would "not give the full powers to the federal government" to back the deal.
The EU has agreed that parts of Ceta will be implemented before all national parliaments have voted on it.
Opponents fear that Ceta will be used as a model to push through an even more controversial EU-US trade deal, called TTIP, much of which remains to be negotiated.
The activists argue that Ceta and similar deals put job security and social welfare at risk, in a global "race to the bottom" that serves the interests of a wealthy elite.
European Parliament briefing on Ceta
A Canadian government trade spokesman, Alex Lawrence, told the BBC that Ceta "remains a top priority for Canada" and "we are still working with our partners in Europe to conclude this agreement".
"This is a progressive deal. If Europe is unable to sign a progressive trade deal with a country like Canada, this will send a clear and unfortunate signal," he said.
Canadian envoy Pierre Pettigrew will meet Mr Magnette later on Friday, he said.
"We are working hard with our European partners so Ceta can be signed this fall and implemented next year."
Some British politicians see Ceta as a good basis for a post-Brexit UK trade deal with the EU. The UK can vote for Ceta while it remains a full EU member.
Ceta does not involve EU-style free movement of labour. But for services - 80% of the UK economy - the Ceta terms are less favourable than those they have now.
Would Ceta be a good model for the UK?


Police have been sent a letter claiming a man who has been missing for three weeks is dead.

Chris May, 28, was last seen at his home in Kelvedon, Essex, on 25 May. His Volkswagen Golf was found abandoned in the village of Fairstead.
A letter sent by Royal Mail to Witham police station stated Mr May was the victim of an assault which led to his death.
Essex Police said the author might have "vital information" about the case.
Det Ch Insp Marina Ericson said she was treating the investigation to find Mr May as seriously as though it were a murder investigation.
"My enquiries surrounding this letter have unfortunately not been able to determine its author," she said.
"I have been able to establish that some of the content is inaccurate but the author may have vital information which could help my team establish what has happened to Chris.
"The more time that passes since Chris was last seen the greater chance there is that he is no longer alive and has come to harm."
The letter was posted inside a white envelope.


A man has been arrested in connection with two armed raids in the south of Edinburgh earlier in the month.

Police Scotland have been looking for three men who used a getaway motorbike after robberies at a shop on Drum Street, Gilmerton, and a petrol station in Hillend on 7 August.
Officers said the incidents had been very distressing for shop staff.
A 23-year-old man has been arrested and is due to appear at Edinburgh Sheriff Court on Monday.


Christine Connor pretended to be a blond-haired Swedish model who lived a life of glamour.

In reality, she was an unemployed dark-haired woman who lived with her mother and brother in a terraced house in north Belfast.
Police have described her as a "lone wolf, dissident republican".
She used a fake social media account to trick a man from England into helping make improvised grenades that she threw at police officers.
An American man was also duped into sending her hundreds of dollars to support a group she claimed to lead called United Struggle. Police say she was its only member.
Both men have since taken their own lives.
"She is a highly dangerous and cunning woman who exploited others to further her own twisted ideology," says Det Supt Richard Campbell, the officer who led the investigation that resulted in her conviction.
Connor's attempt to kill police officers in May 2013 had been planned for months.
She created a fake social media account using a photograph of a Swedish model called Sanne Andersson.
A man called Stuart Downes from Shrewsbury in England began communicating with her and was persuaded to help construct bombs.
He purchased the parts and materials needed and sent them to Connor.
Evidence recovered by detectives after her attack included mobile phone footage Downes recorded of himself testing the explosive mix that was used.
Connor also filmed herself walking along the Crumlin Road talking about what she planned to do and sent the video file to him.
She made two attempts to lure police officers into attacks.
On 16 May 2013, she made a hoax call claiming to have seen "a pipe with wires sticking out" on the Crumlin Road in north Belfast.
Twelve days after that attempted ambush failed, she used a different tactic.
In the early hours of 28 May, she called police and claimed to be a victim of domestic violence.
An audio recording of the call sounds very authentic, with a breathless Connor claiming to be a woman who had been punched in the face by her boyfriend and was in desperate need of help.
When police arrived at the house where she claimed the attack had taken place, Connor emerged from a lane and threw two home-made grenades.
None of the officers was injured, but both devices exploded, sending pieces of shrapnel up to 35 metres.
One of the officers heard a fizzing noise and said a device "about the size of a Coke can with sparks coming out of it" landed at his feet.
The officer ran and seconds later heard a loud bang.
"These devices undoubtedly had the capability to kill anyone who was within the blast radius," said Det Supt Campbell.
"We are very fortunate that we didn't have very seriously injured or killed police officers as a result of this incident."
While Connor was determined, she was also careless. She left a litany of evidence of her involvement.
A mobile phone used to make the hoax call to police was found in a garden a short distance away. A pair of gloves she wore was found in the lane from where the attack was launched. A hoodie she wore was found discarded in a skip.
There was also CCTV footage.
A camera operated from a nearby police station recorded her walking in the area carrying a plastic bag around half an hour before the grenades were thrown.
Another camera recorded the immediate aftermath of the attack, with a plume of smoke in the area where the grenades exploded.
A short time after the attack, Connor was filmed walking quickly away from the scene towards her home on nearby Ligoneil Road.
She was no longer carrying a bag. Police believe it was used to transport the grenades.
Just 17 hours after throwing the grenades, Connor was arrested at her home.
There, detectives found another mobile phone, SIM cards and a laptop computer stuffed inside the mattress of a bed.
The material included the mobile phone recording of her planning the attack and details of communications with Stuart Downes.
He was arrested by detectives from West Mercia Police a short time after making a call from a public phone box in Shrewsbury claiming responsibility for the attack which, he said, had been carried out by United Struggle.
Downes had been due to stand trial on five charges, including attempted murder.
During his time on bail, he was sent a bullet in the post. Police cannot say for certain if it was sent by Christine Connor, but they said it was a clear attempt to put pressure on him not to give evidence against her.
Downes took his own life in June last year.
At the inquest into his death, a coroner said the possible outcome of the criminal proceedings had been weighing heavily on his mind.
The detectives who searched Connor's home also found evidence of another fake social media account she used to communicate with a 28-year-old American called Zachary Gevlinger.
Described as a vulnerable person, he was a graduate of Wisconsin University. He went on to have a job as a maintenance worker there.
Detectives found evidence that he had sent cheques to the value of hundreds of US dollars to Connor.
He was arrested by the PSNI in the car park of Hydebank women's prison in June 2013, minutes after visiting Connor while she was on remand.
Zachary Gevlinger was questioned for nine days, and his home was also raided by the FBI. He took his own life in May.
Christine Connor had been due to stand trial on six charges, including the attempted murder of a police officer, possession of explosives, and preparation for terrorist acts.
But in a surprise move last month, she pleaded guilty.
In spite of the fact that Connor and Downes managed to construct what have been described as two "sophisticated" fully functioning bombs, police said there was no evidence that they were part of any dissident republican organisation.
Det Supt Campbell said the PSNI was satisfied that the pair acted alone.
"During the course of the investigation, we found a substantial amount of evidence that showed that both Christine Connor and Stuart Downes were involved in the sourcing of material, the construction on the devices, and in Christine Connor's case, actually throwing the devices," he said.
"There's no evidence that I have that anyone else was involved. We're not looking for anyone else in connection with the attacks."


The proportion of top A-level grades has fallen slightly this year, but record numbers have been accepted on university courses.

A* and A grades were awarded to 25.9% of entries, down from 26% last year. But in a year of "stable" results, passes rose by 0.1 percentage point.
The Ucas university admissions service says 409,000 places have been confirmed, up 3% on last year.
Universities minister Jo Johnson hailed the rising numbers as "great news".
Hundreds of thousands of teenagers in England, Wales and Northern Ireland are receiving their A-level results on Thursday.
The exam boards say that the number of A-levels taken this year has risen to over 850,000, with maths, English and biology the most popular. There was a sharp increase in pupils taking computing.
25.9%
received A or A* grade
98.1%
overall pass rate (A-E) - up 0.1 percentage point
8.2% received A* grade - no change on last year
409,000 degree places confirmed, up 3 percentage points
13,415 more female entrants in 2015 than last year
"The over-riding message from this year's figures is one of stability. There have been no significant changes to the system," said Michael Turner, director of the Joint Council for Qualifications.
The overall pass rate has risen marginally to 98.1% and the proportion getting the very top A* grade remained the same at 8.2%, with A grades down by 0.1%.
Schools minister Nick Gibb said the results showed the impact of the government's drive for "core academic subjects" with a 20% increase in maths entries since 2010.
"As a result thousands more pupils, from all backgrounds, are studying subjects that will secure them a place at a top university or an apprenticeship and that will help to secure well paid employment," said Mr Gibb.
Chris Keates, leader of the Nasuwt teachers' union, said that the results showed that the "gold standard" A-level system had been maintained, despite the pressure on schools to prepare for forthcoming changes to exams.
The ASCL head teachers' union said that it was "disappointing" to see a decline in some subjects, such as music, German and design and technology. Heads linked the decline to budget pressures making it difficult to sustain subjects with smaller numbers of pupils.
The British Council highlighted the further fall in pupils taking French and said the numbers taking languages were "disappointingly low".
The CBI director general, John Cridland, emphasised the importance of providing high status vocational options for students.
"For too long vocational choices have been seen as the understudy to academic subjects, but this simply won't wash anymore. Vocational qualifications should have the same A-level brand, which is well-respected by businesses," said Mr Cridland.
But this year's lifting of the cap on university places in England has seen more students than ever accepted on to courses.
Initial figures from Ucas show a 5% increase in places for 18 year olds in the UK, but a reduction among older age groups.
The gender gap has widened further, with 27,000 more women than men about to start university courses this year.
The number of international students and from the European Union has also increased.
A-level results
What if my grades are disappointing?
Results Day: It was different in my day...
A-level expert advice
Newsbeat listeners send in their experiences
Analysis: What lessons can be drawn from this year's results?
Northern Ireland: Pass rate rises
Wales: Top grades rise, but below UK average
With no fixed limit on the number of places universities are permitted to offer, there is likely to be more competition for students.
In the run-up to results day, some universities have been attempting to secure students on to courses by revising conditional offers into unconditional ones.
Any unallocated university places will be matched with students with the right grades through the process known as Clearing.
Pam Tatlow, chief executive of the Million+ university group, said Clearing would not be too different from previous years, despite the removal of the cap on student numbers.
"A lot of activity has gone on before Clearing in terms of unconditional offers, and as usual there will be competition and students will have choices to make," she said.
"Students will have to keep calm and think about what is the right course for them."
Labour's shadow education secretary Tristram Hunt warned that there still needed to be more effort to get female students to take science subjects.
"We still waste far too much potential. These results remind us that progress on increasing the number of young women taking subjects like physics, maths and computing is still too slow."
Nansi Ellis, assistant general secretary of the Association of Teachers and Lecturers, congratulated students and teachers on the results.
"Although this year's results are stable, this is unlikely to be the case when the A-level reforms kick in and all A-levels are only assessed by end of course exams."


The Rolling Stones were double winners at the NME Awards, more than half a century after they first featured in the magazine's pages.

The veteran group were named best live band, and their documentary Crossfire Hurricane landed the best film prize.
The event, at London venue The Troxy, saw rock trio Biffy Clyro named best British band, while The Killers landed the best international band prize.
And former Smiths guitarist Johnny Marr took NME's "godlike genius" award.
The accolade was to recognise his achievements during a 30-years musical career during which has he has worked with acts such as Paul McCartney, The Pretenders, The The, Modest Mouse and The Cribs.
Another double winner at the annual bash was Florence Welch, of Florence and the Machine.
She was named best solo artist and provided the vocals on Sweet Nothing, by Calvin Harris, which was named best dancefloor anthem.
Meanwhile, One Direction, the chart-topping group which picked up a global success prize at the Brit Awards last week, was named worst band.
And singer Harry Styles was named villain of the year.
Ryan Jarman, lead singer of the Cribs said: "To get something like the Outstanding Contribution Award, it's a big deal for us after 10 years. The whole thing is kind of surreal."
The full list of winners can be found at the NME website.


ITV show Loose Women was briefly taken off air on Wednesday after protesters interrupted the show.

The disruption occurred as Ruth Langsford was speaking to Coleen Nolan about her struggles with weight loss.
During the item, fathers' rights protesters were heard shouting: "No kids, no cash!"
The show cut to a standby screen with the Loose Women logo for around 20 seconds, as the shouting faded away.
Once back on air, Nolan joked: "Can we get back to me?"
Langsford said: "Those gentlemen have left us, so where were we?"
A message was immediately posted on the Loose Women Twitter account, reading: "Apologies for that small interruption."
An ITV spokesperson said: "The show was briefly interrupted today by three members of the audience who were making a peaceful protest."
The production team were widely praised on social media for dealing with the disruption quickly.
Singer and actress Michelle Heaton tweeted: "Wow Loose Women, love that you came back on air within seconds... well done!"
One viewer, Ian Wright, wrote: "Wanted to congratulate all on the panel & the background staff for the way they dealt with it."


Canada's Liberal Party has decisively won a general election, ending nearly a decade of Conservative rule.

The centrist Liberals, led by Justin Trudeau, started the campaign in third place but in a stunning turnaround now command a majority.
Mr Trudeau, the 43-year-old son of late Prime Minister Pierre Trudeau, said Canadians had voted for real change.
Incumbent Conservative PM Stephen Harper - in power since 2006 - has congratulated his rival.
Justin Trudeau is son of late Prime Minister Pierre Trudeau, considered the father of modern Canada.
Meet Justin Trudeau
Young Canadians' hopes
Seven key Trudeau policies
Trudeau's to-do list
Addressing jubilant supporters, Mr Trudeau said Canadians had "sent a clear message tonight: It's time for a change".
"We beat fear with hope, we beat cynicism with hard work. Most of all we defeated the idea that Canadians should be satisfied with less.
"This is what positive politics can do," he said, also praising Mr Harper for his service to the country.
During the 11-week election campaign, the Liberal Party said it would:
Why Harper lost: Anthony Zurcher, BBC News, Montreal
It was a sweeping victory that seemed unthinkable five years ago, improbable just months ago and unlikely even a few days ago.
When Mr Harper first announced that this year's general election campaign would be a record 78 days long, conventional wisdom was it would benefit the Conservatives, giving them more time to bring their financial advantages to bear.
In hindsight, however, the lengthy campaign gave Mr Trudeau an opportunity to introduce himself to Canadians and overcome Conservative attacks that characterised the 43-year-old former high-school drama teacher as too inexperienced to lead the Canadian nation.
Mr Trudeau also successfully outmanoeuvred the New Democratic Party, campaigning to that party's left on economic issues.
For Mr Trudeau, the hard work of bringing the Liberal Party back from the ashes is over. Now, as the next prime minister of Canada, the even harder work of governing is about to begin.
Trudeau brings Liberals back on top
The economy loomed large during the campaign. Mr Harper highlighted his legacy of balanced budget and tax cuts, while Mr Trudeau pointed to sluggish growth to support his calls to boost demand through public spending.
Mr Trudeau's infrastructure policy is projected to cost C$10bn in the first two years, equivalent to 0.5% of Canada's GDP - tipping the federal budget into deficit. But, BBC business reporter Robert Plummer says, if the money is spent on the wrong kind of infrastructure, it may not do any good while saddling the government with unnecessary debt.
Whatever happens, richer Canadians can expect to face a higher tax bill, handing over more than half their income in combined federal and provincial taxes, while ordinary folks can look forward to tax breaks.
And in the short term, Mr Trudeau's policies may help stabilise the economy, making it unlikely that the Bank of Canada will cut interest rates further - meaning borrowing costs should remain low and house prices relatively high.
What now for Harper?
Mr Harper, one of the longest-serving Western leaders, had been seeking a rare fourth term.
Speaking after the polls closed, he said he had congratulated Mr Trudeau, and that the Conservatives would accept the results "without hesitation".
Mr Harper will stand down as Conservative leader but remain as an MP, his party says.
There is no fixed transition period under Canada's constitution.  Mr Trudeau is expected to be sworn in in a few weeks' times.
Tom Mulcair of the left-leaning New Democratic Party (NDP) said he had "congratulated Mr Trudeau on his exceptional achievement".
The NDP is on course to win 44 seats, less than half the number they held in the outgoing parliament.


Midlothian Council has become the first local authority in Scotland to put up household taxes following a nine-year freeze across the country.

The average Band D bill will rise by £36 a year to £1,246.
Western Isles Council decided later to increase the charge by 3%. Four other councils, including Edinburgh, are due to reach decisions on Thursday.
The council tax has not gone up anywhere in Scotland since 2007 after a Scottish government brokered deal.
The nine-year long national council tax freeze ends this year, and councils have the power to up the basic bill by up to 3%.
Many councils still have not indicated publicly what they are likely to do.
Raising the council tax will only generate a relatively modest amount for many councils.
In the case of Comhairle nan Eilean Siar (Western Isles Council) a 3% rise for everyone, together with the higher charges people in high band properties across Scotland will pay from April, will only raise about £500,000.
But with council budgets tight, this is still a significant amount.
All 32 councils will take decisions on the council tax in the next few weeks.
Edinburgh will be the first big council to decide whether to raise the council tax, with Aberdeenshire, Borders and East Renfrewshire also taking a decision on Thursday.
Edinburgh and Borders are both expected to raise bills by 3% while Aberdeenshire has proposed a 2.5% increase.
East Renfrewshire has made no statement of intent so far.
However, as a relatively prosperous area, it is set to receive a larger than average amount from the national changes to how much those in high band properties are charged.
A 3% universal rise on top of these changes could prove contentious locally.
Council tax bills across Scotland have not increased since 2007.
Typically the council tax accounts for about 15% of a council's budget. Most of their cash comes from the business rates or the Scottish government.
This year councils have the power to put up the charge by up to 3% without losing government money.
The way the council tax works means that councils set the Band D charge - all other charges are a fixed proportion of this amount.
But the relationship is being changed, which will mean that people in Band E, F, G and H properties will pay more automatically.
Local government finance is a contentious issue ahead of May's council elections.
Last Thursday the Scottish government agreed to give councils £160m more than it had originally planned to secure support for its budget from the Scottish Greens.
Most councils say they still face a cut in the amount of government cash they get for ongoing activities. Local government organisation Cosla says councils face £200m of cuts.
The government argued that even before the £160m is included, more was going to be available for local services in the coming years.
In these calculations it included the council tax changes, possible rises and new money including £120m which has to be given to headteachers to spend on schemes to raise attainment.
Although councils face difficult financial decisions, when they give headline totals for cuts and savings they are talking about more than the amount they get from the government.
They are also including, for example, the need to save money in one area because of increasing costs in another and the limited control they have of their finances.
Many have attempted to take hard choices in such a way as to minimise the need for controversial decisions on local services this year.
When is your council tax due to be set?
7 February - Western Isles, Midlothian
9 February - Edinburgh, Borders, East Renfrewshire, Aberdeenshire
15 February - Moray, Shetland
16 February - Highland, Renfrewshire, Inverclyde, Angus, Fife
21 February - East Lothian
22 February - West Dunbartonshire, Aberdeen, Falkirk, Perth and Kinross, Orkney
23 February - East Dunbartonshire, East Ayrshire, Stirling, Argyll and Bute, Dundee
28 February - Dumfries and Galloway
1 March - North Ayrshire
2 March - South Ayrshire
TBC - South Lanarkshire, West Lothian, Clackmannanshire, North Lanarkshire, Glasgow


Oil prices have fallen below $30 a barrel for the second time this week.

It comes as concern grows that Iran could restart oil exports flooding a market already under intense pressure from global oversupply and weak demand.
Brent crude fell more than 4.5% to $29.46 and US West Texas intermediate oil fell to $29.47
Iran could restart exports if the International Atomic Energy Agency (IAEA) reports it has complied with measures to curb its nuclear programme.
The IAEA could publish its report as early as Friday, following a meeting in Vienna.
Iran has the fourth largest proven oil reserves in the world, according to the US Energy Information Agency and any additional oil would add to the 1 million barrels a day of over supply that has led to a more than 70% collapse in oil prices since the middle of 2014.
"With sanctions on Iran likely to be lifted, more oil is flooding the markets," Commerzbank analysts wrote in a note.
"Although the additional supply had been imminent for some time, current sentiment ought to send prices further south."
Commerzbank cut its 2016 forecast for oil prices, changing  its year-end expectation for Brent to $50 per barrel, down from a previous forecast of $63.
Iran's oil exports were already on target to hit a nine-month high in January, with 1.10 million barrels a day of crude, to load.
Oil prices have fallen by about 70% in the past 18 months as supply has outstripped demand. The demand for oil from China has fallen as its economic growth has slowed. Meanwhile supply has increased, partly due to the rise of US shale oil. In addition, the world's largest exporter of oil, Saudi Arabia, has refused to cut production - something it has done previously to support oil prices. Analysts estimate that about one million barrels of oil are being produced above demand every day.
Consumers and some businesses have benefitted from lower oil prices. UK motorists have seen the price of petrol and diesel fall from about Â£1.40 a litre 18 months ago to about Â£1 now. Transport operators and airlines should also be benefitting from cheaper fuel. The lower fuel costs have also helped to keep inflation close to zero in many countries.
Oil exporting nations that rely on a higher oil price to break even are suffering, such as Russia, Nigeria and Venezuela, as are oil firms generally. There have been thousands of job losses in the North Sea's oil industry. Investment in exploration has also been cut by big oil firms such as Shell, BP, Total and Exxon Mobil.
Iran is expected to target India, Asia's fastest-growing major oil market, as well as its old partners in Europe, such as Greece, with the increased exports.
It is the wrong time for Iran to be returning to the oil market, both for the market and likely also for Iran," brokers Phillip Futures said in a note on Friday.
The continuing collapse in oil prices has also added to pressure on oil producing nations that rely on exports including Algeria, Venezuela, Nigeria and Russia.
Earlier this week, Russian prime minister Dmitry Medvedev warned tumbling oil prices could force his country to revise its 2016 budget.
He said that the country must be prepared for a "worst-case" economic scenario if the price continued to fall.
Taxes from oil and gas generates about half the Russian government's revenue.
The 2016 federal budget that was approved in October was based on an oil price of $50 a barrel in 2016 - a figure President Vladimir Putin has since described as "unrealistic".


About 6,000 Chinese schoolchildren have been sent home amid fears for the safety of buildings near the site of an explosion on Tuesday, state media says.

Two trucks packed with explosives blew up while they were in a repair garage, killing eight people and leaving more than 200 wounded.
Officials in Fuquan city, Guizhou province, ordered schools closed while they carried out safety tests.
The cause of the explosion is still being investigated.
The state-run Xinhua news agency said some 50 schoolchildren and seven teachers were among those hurt in the blast.
Six schools had windows shattered by the blast and were ordered to be shut, the agency quoted local education officials as saying.
Analysts say Chinese officials are particularly sensitive about safety standards in schools, after many schoolchildren died in an earthquake in Sichuan province in 2008.
The government was criticised by the children's families, who questioned why schools had collapsed but many other buildings - including government offices - were still standing.
The Fuquan explosion wrecked buildings and scattered shards of glass - one of the main causes of injuries.
An eyewitness described being blown of his feet by the power of the blast.
"I stood up and ran to the houses over there for shelter, but when I got there, the houses were all smashed," he said.
Medical officials warned that the death toll could rise because several of those being treated in hospital had been seriously injured.


A care worker has been found guilty of stealing money from a pensioner after the theft was captured on a CCTV camera installed by his family.

Theresa Stratton, 39, stole £130 from the wallet of 74-year-old David Skerritt at his home in Rustington, West Sussex.
She had denied theft, claiming she had borrowed the money with his permission.
Stratton, of Dorset Close, Littlehampton, is due to be sentenced at Chichester Crown Court on 10 March.
Live: More on this story and other news from Sussex
Following a trial at the same court, Judge Christopher Parker QC warned her she would "almost certainly" face a prison sentence, saying there had been a "high degree of betrayal of trust".
Widower Mr Skerritt, who had Parkinson's Disease and has since died, lived alone in his bungalow with carers visiting daily.
Stratton, who was employed by Caremark, first visited him in August 2015.
The trial heard how she helped him to the bedroom on her second visit to use a commode, and then went to his lounge where she was recorded on CCTV taking the money from his wallet.
Giving evidence, Stratton said she had mentioned to Mr Skerritt she had lost her bank card and needed petrol.
She claimed he had offered to lend her £10, which she took from his wallet with the intention of paying back on her next visit.
Speaking after the verdict Mr Skerritt's daughter, Joanne Martinez, said she was very relieved.
"Dad had carers for seven years and the cameras were because of his Parkinson's and his falls and to work out where he could be struggling in the home," she said.
"It wasn't to catch thieves... so I could not believe what she was doing."
Ms Martinez added her father had not felt safe in his own home afterwards and his health "went downhill".
In a statement, Caremark said the care and wellbeing of its clients was paramount.
"All our staff are vetted, DBS checked and trained in order to safeguard the vulnerable people we care for and therefore this incident of theft by one of our care workers is highly regrettable.
"As soon as the theft was discovered we dismissed Ms Stratton."


It is the meeting everyone is talking about: Donald Trump Junior, his brother-in-law and the chairman of Donald Trump Senior's election campaign talking to a Russian lawyer who had allegedly offered damaging material about Hillary Clinton.

It was an encounter proposed by a British music publicist and allegedly arranged by an Azerbaijani-Russian businessman, whose pop star son once featured Mr Trump Sr in a music video.
Feeling lost? Here are the key players explained.
The centre piece of it all is Donald Trump's eldest son from his first marriage to Ivana, who is now executive vice-president of the Trump Organization.
Here is how it unfolded: he received an email from British music publicist Rob Goldstone promising documents from Russia that would incriminate Democratic candidate Hillary Clinton.
The meeting was allegedly arranged by Azerbaijani-Russian billionaire Aras Agalarov, whose son Emin is a pop star who was managed for a time by Mr Goldstone (more on all of them later).
One email from Mr Goldstone said the information they had been promised was "obviously very high-level and sensitive information but is part of Russia and its government's support for Mr Trump".
Mr Trump Jr's response to it was: "If it's what you say I love it".
The meeting took place in June 2016 at Trump Tower in New York. When news of it emerged, he denied that the meeting had anything to do with the campaign (we explain what he said below).
He then told Fox News Ms Veselnitskaya had provided them with nothing of use and it had only lasted 20 minutes.
Full Trump Jr emails
Four explosive lines in emails
Timeline of denials
The husband of Ivanka, the president's eldest daughter, and a long-time adviser to Mr Trump, who played a key role in his campaign.
Despite having no diplomatic credentials, he has found power with Mr Trump at the White House, being tasked with resolving the Israeli-Palestinian conflict. He also serves as the president's lead adviser on relations with China, Mexico and Canada.
He has yet to comment on the case.
Who is who in the Trump clan
At the time of the meeting, he was a newcomer to the Trump team, brought in to professionalise the campaign. He quit in August, under fire for his ties to Russian interests and a former Ukrainian president.
He has also not commented on the case. But Politico website, citing an unidentified source close to him, said that Mr Manafort had not read the email exchanges to the end on his phone and that he had not even known who was going to be in the meeting.
Known for her campaign against the Magnitsky Act, which enables the US to withhold visas and freeze financial assets of Russian officials thought to have been involved with human rights violations. In reaction to this controversial act, Russia barred Americans from adopting Russian orphans.
Mr Trump Jr had initially said the discussion of this ban was the subject of their meeting. That was before his email exchange with Mr Goldstone was revealed.
Ms Veselnitskaya was married to a former deputy transportation minister of the Moscow region, the New York Times says. Her clients included state-owned companies and a senior government official's son, whose company was under investigation in the US when the meeting took place.
Her work and connections had drawn the FBI's attention, an unnamed former senior law enforcement official was quoted by the Times as saying.
She told the paper: "Nothing at all was discussed about the presidential campaign... I have never acted on behalf of the Russian government and have never discussed any of these matters with any representative of the Russian government."
Trump-Russia scandal: How did we get here?
Russian cloud hangs over White House
The man who set up the meeting.
The publicist has worked closely with world-renowned stars such as Michael Jackson, BB King and Richard Branson. But, despite all of those big names, he was little known to the world until now.
Mr Goldstone's posts on social media suggest he has spent several days in Russia and Azerbaijan on different trips in recent years, including in the months before last year's US presidential election.
Media outlets report that shortly after Mr Trump's win, he posted a picture on his Instagram account in which he wore a T-shirt with "Russia" in big letters on it. The account was made private after the reports emerged.
He is a former journalist - media reports say he used to work in tabloids. Most recently, he managed pop star Emin Agalarov.
He has not commented.
Why is this British guy emailing Trump Jr?
Often called the "Donald Trump of Russia", with an estimated fortune of about $1.9bn (Â£1.4bn), according to Forbes.
Born in Baku, Azerbaijan, he is the owner of Crocus Group, a major Russian property development company, and was Mr Trump's business partner in taking the Miss Universe competition to Moscow in 2013.
He was also working to partner with Mr Trump in bringing Trump Tower to Russia, a project that never materialised. Crocus, meanwhile, is currently building two stadiums in preparation for the 2018 World Cup hosted by Russia.
Reacting to the news, the billionaire denied any intention to damage Mrs Clinton.
"These are just fantasies! I do not know who invents them and what Hillary Clinton has to do with it. I do not know, I don't even properly know Rob Goldstone. He worked with Emin, probably, as a manager for a certain period of time, or he may have promoted something in the USA, I don't know."
The Baku-born singer is a music star in Russia and Azerbaijan. In 2013, Mr Trump featured in one of his music videos with that year's Miss Universe contestants - the clip has been watched almost 2m times on YouTube.
In 2006, he married Azerbaijani president Ilham Aliyev's daughter, Leyla. The couple had two boys and adopted a girl, but have since divorced.
Mr Goldstone said in the emails that the meeting was set up at the request of the singer. Emin Agalarov has not commented.


England defender Casey Stoney marked International Women's Day by holding a Twitter Q&A with supporters via #bbcsportsday.

Arsenal defender Stoney, capped more than 100 times by her country, is currently playing for England in the SheBelieves Cup in the United States.
Mark Sampson's side have lost their opening two games in the tournament to Germany and the host nation.
England play their final group game against France on Wednesday (22:00 GMT).
The match will be live on the BBC Red Button and BBC Sport website, with coverage starting at 21:50 GMT.
The US and Germany meet after the England game to determine who will win the tournament.
Emma: As it's international women's day, which females inspire you?
Casey Stoney: The strong women in my life, my mum, my partner Megan and my little girl, Tilly.
Sulaiman Ritchie: With the new signings adding to the team are you as confident as I that you can win the treble this year?
CS: Treble, wow, no pressure there! I'm really confident going into this season. We've got a fantastic squad which will be very competitive. Other teams have made great additions too though so it's going to be a fantastic year for women's football.
Ceri: Who is the best striker you have played against and why?
CS: We've got amazing great strikers in the England squad but I'd have to say over the year, probably the best was player was Germany's Brigit Prinz. She was an absolute machine.
Ceri: What do you think of the new Arsenal ladies hub that was opened today?
CS: Fantastic! It'll make a real improvement to our day-to-day lives as it's such a professional environment. We now have our own home and it'll just makes our lives a lot easier.
Mark Sims: What would be your favourite match you ever played in?
CS: It has to be at the London 2012 Olympics when we played Brazil at Wembley. It was the proudest moment of my career to lead my team out at the home of English football. I never, ever dreamt that would happen!
Richard Tugwell: What do you feel it will take to close the gender gap in football?
CS: We need more women in board rooms and decision-making positions. We also need clubs to do more in terms of marketing and the commercial side of things to get bums on seats at the grounds. And we need to have continued success at international level because we saw what happened after we won the bronze medal at the World Cup.
Kayleigh: Who would make your five-a-side team? (One male and one female team!) Thanks for all you do!
CS: In the women's team, alongside me I'd have Pauline Cope in goal, Kelly Smith, Fara Williams and Karen Carney. For the men's team I'd have David Seaman, Paolo Maldini, Bobby Moore, Lionel Messi and Cristiano Ronaldo - be interesting to see if those two could play on the same team together.
Five things about football: What are five changes you would like to see made to women's football?
Fred Thurbin: Considering how well our international team is doing how come our club sides struggle so much in Europe?
CS: Our WSL season isn't formatted for us to be successful in Europe so we're out of sync with the other countries. The other teams are still playing week in, week out when we're in the off the season.
Media playback is not supported on this device
Ian Wright and Thai food
MazLeedsLadies: Casey, who was your hero/heroine growing up?
CS: There wasn't a lot of women's sport on TV when I was growing up so didn't really have a female heroine growing up, part from my mum! Ian Wright was someone I admired, he always made playing football look fun.
John Hayhurst: Casey, Who has been the biggest influence on your career?
CS: Keith Boanas, my coach at Charlton. He's still a mentor even now and is like a father figure to me. He believed in me when I didn't even believe in myself, he's the reason I kept going.
MK: What is your favourite thing about playing football? Who is the best player you've ever played with and best player you've played against??
CS: No matter what's going on in life, I can emerge myself into a game and I love it. Outside of my family, it's the love of my life.
Helen Charlesworth: Best advice for 15 yr girl (16 next wk!) who wants to be professional player? Currently at Gillingham centre of excellence.
CS: You have to love what you do because it's really, really hard work to get to top and it's even harder to stay there. It sounds like a cliche but there are no shorts cuts. You have to be very dedicated and challenge yourself everyday to be better.
Becky White: What are you most looking forward to with the new season? Also any chance I could get your England top?
CS: I may run a competition for my England top so keep your eyes peeled! To be honest I'm just looking forward to playing again after such a long break.
Kenny Gooner: What's your best moment as an Arsenal player? What's your favourite food?
CS: I love Thai food. My favourite moment at Arsenal has to be winning the FA Cup in 2014.
Michael Carroll: Who has been the best manager you have played under in your career & why?
Keith Boanas at Charlton, without a doubt. He cared about me as a person, ahead of being a player and so he always got the best out of me.
Connie Bostock: Did anyone tell you that you couldn't play and if so what was your response?
CS: I was told this constantly when I was a little girl. We were told we didn't play football so my response was to role my sleeves up and prove them wrong. And I'm very pleased i did!


John Swinney, the SNP's deputy First Minister of Scotland, told the Today programme this morning that the heart of its manifesto - due out later today - would be to end austerity in the UK as a whole, and would support Labour to bring that about.

This may sound great for Labour and Ed Miliband. But it is in fact pretty much his worst nightmare.
How so?
Well, Labour last week put at the heart of its manifesto that if elected it would get the government's deficit and debt down in the course of the next parliament, and to that end there would be cuts in non-protected public services (or everything but schools, health and overseas aid).
It did that partly because all its polling showed that in England it would need to demonstrate what it thinks of as "fiscal credibility" to get a hearing from undecided voters.
So it is quite definitely not an act of amity and solidarity with its putative Labour brothers for the SNP, led by Nicola Sturgeon, to tell voters that she'll get the Tories out, get Labour in and make sure Labour won't stick to its fiscal promises.
The great fear for Labour is that its recent progress in England will be derailed, while its collapsing vote in Scotland remains shattered.
Which if you are a Tory, you may think is great. And in fact the Tories are currently shouting from the rooftops about Labour being bossed by the SNP.
But the Conservatives could yet live to regret the consequence of campaigning on the supposed poisonous embrace offered by Sturgeon to Miliband - because it brings the risk for the UK of constitutional and economic crisis.
How so?
Well, the Tories may hope that by alleging a Labour government would be backseat-driven from Edinburgh they'll persuade enough floating voters to switch to them, and secure an overall majority.
However all the opinions currently demonstrate that's profoundly unlikely - it would require a shift of votes late in a campaign on a scale for which I can find no modern precedent.
A far more plausible outcome is that the Tories end up with a few more seats than Labour, on the back of a slightly bigger share of the vote - and would therefore have first dibs on trying to form a government, under our constitutional convention.
But if the SNP end up getting the number of seats that currently looks likely - not a million miles from 50 - and the Liberal Democrats slump to less than 30 (which also looks likely, right now), it may be impossible for the Tories to form either a workable coalition or an effective minority government on the so-called confidence-and-supply basis (whereby it would secure the backing of smaller parties for measures crucial to its ability to govern).
At that point, Labour would presumably have its chance to form a government. But it has ruled out a formal coalition with the SNP. And it is very difficult to see how it could form any kind of more loose partnership with the SNP which would not look profoundly undemocratic to many English citizens, insulting to its residual loyalists in Scotland and therefore lethal to its long-term reputation.
Could Labour form a credible government if it had fewer seats and fewer votes than the Tories, and having spent its campaign repudiating the advances of the SNP? That seems implausible.
Out of this mess, perhaps a very odd and paradoxical alliance could be forged, as Robert Harris mused in yesterday's Sunday Times, between a Tory party recognising that union with Scotland no longer serves its own existential interests and an SNP whose priority is to secure constitutional independence from the rest of the UK coupled with a continued monetary union.
As Harris pointed out, alliances as strange have been forged in our parliamentary history - and the logic of securing power can trump ideological and emotional differences.
More likely however is that the UK would need another general election in short order.
Which all sounds a bit inconvenient, but from an economic perspective could be a bit worse than that. Business leaders tell me they would expect an investment hiatus by companies during the unstable interregnum, bankers tell me overseas investors would shun the UK and city traders anticipate a sharp and destabilising fall in the pound; .
It would be the equivalent of a big chill hitting Britain, that temporarily undermines economic activity.
So because of the way that Scotland's resources are determined by the UK's budget, via the block-grant arrangements, it may be completely reasonable for the SNP to campaign in this election to end austerity for the whole of the UK.
But the consequences of its decision to exercise that logic are unpredictable.


A monkey recently returned to Blackpool Zoo after it was stolen during a break-in has given birth to twins.

The cotton-top tamarin, one of five monkeys stolen by thieves at the zoo in April, was thought to be in the early stages of pregnancy when it was taken.
The twins, yet to be sexed and named, are doing "extremely well" along with their mother Mamma, the zoo said.
Four of the monkeys were found on a doorstep in West Yorkshire, but a baby belonging to Mamma is still missing.
Charlotte Pennie, from Blackpool Zoo, said the twins would be "vital for the international breeding programme" as the species is extremely endangered.
There are said to be about 6,000 tamarins in the wild in their native Colombia, with numbers largely reduced through deforestation.
The animals can fetch up to thousands of pounds on the black market in the UK and abroad.


Hotel security guards are among 33 people facing charges that they failed to help tourists during 2015's deadly attack on a beach in Sousse, Tunisian officials say.

They are accused of not assisting a person in danger, leading to their death, spokesman Sofian Sliti said.
It comes after a UK judge said the Tunisian police response had been "at best shambolic and at worst cowardly".
The attack by student Seifeddine Rezgui killed 38 people, most of them British.
He opened fire on holidaymakers in the resort of Port El Kantaoui in an attack claimed by so-called Islamic State.
Police officers near the scene ran in the opposite direction to get more guns while he shot sunbathers and threw grenades, the British inquest heard.
Rezgui then went into the Imperial Hotel to kill more people. He was shot dead by police an hour after beginning his attack.
Six security guards from the Imperial Hotel are among those under investigation, Mr Sliti told Reuters.
So far 14 people have been arrested, 12 people are being investigated but are not in custody and seven more are on the run, Mr Sliti said.
The investigating judge ended his investigation last July and the case has been sent to Tunisia's criminal court but no trial date has yet been set, he said.


Hundreds of people turned out to pay tribute to a man known as "Britain's oldest DJ" at his funeral in Bristol.

Derek Serpell-Morris, known as DJ Derek, went missing last July aged 73. His remains were discovered in March after a high-profile search.
During the service at St Agnes Church in St Pauls, Bristol, Gerald Serpell-Morris said his brother's "increasing fame amused him".
In a eulogy he described his brother as "kind, modest and unassuming".
Rev Liz Perry, the church's priest-in-charge, said: "Everyone described him with a great deal of love.
"There was a great sense of humour about the place - a reflection of Derek and his personality. He was a showstopper and his funeral was a showstopper."
Updates from the funeral on the BBC Local Live page
DJ Derek, a former accountant, was known to thousands of music fans and played hundreds of sets at local clubs and pubs, as well as at the Glastonbury festival.
He had lived in St Pauls in Bristol since 1978, worked with Massive Attack and once appeared in a Dizzee Rascal video.
His great niece Jennifer Griffiths and friend Aiden Larkin - who was DJing at the church before the service - also gave eulogies.
Bob Marley's One Love was played following the service which also included a bible reading about love from 1 Corinthians 13, an address by lay preacher Ian Love, and the hymn For the Beauty of the Earth.


Stock markets across the world have fallen sharply as fears of a Chinese economic slowdown continue to haunt investors.

London's FTSE 100 index closed down 4.6% at 5,898.87, with major markets in France and Germany down by 5.5% and 4.96% respectively.
In total, Â£73.75bn was wiped off the FTSE 100 as a result of Monday's falls.
Wall Street's Dow Jones initially fell 6%, but recovered to trade just 0.8% lower.
At one point it fell below 16,000 for the first time since February 2014, while the technology-heavy Nasdaq index was 1% lower, recovering from an earlier plunge of 8%.
Shares in Asia were hit overnight, with the Shanghai Composite in China closing down 8.5%, its worst close since 2007.
At its lowest point in the day, the FTSE 100 had lost as much as 6%, wiping some Â£100bn off its value.
Global investors are worried about growth in the world's second largest economy.
Read the latest updates on our live page here.
The floor was buzzing long before the US market open. All the traders knew this wouldn't be a typical sleepy August Monday.
Minutes after the opening bell, the Dow fell a staggering 1089 points, its biggest ever points drop. One floor trader complained his shirt was soaked with sweat after the early plunge in stocks.
Another, Stephen Guilfoyle from Deep Value, told me the US markets were 'bordering on the edge of panic but not quite there yet.' He can remember the crash of 1987 and said this didn't feel as bad.
Indeed by late morning, US markets were showing some resilience, leading Mark Otto of J Streicher to conclude that Monday's big market moves in the US were similar to the 'flash crash' of 2010, when billions of dollars were wiped off some of the world's biggest companies in a matter of minutes, only to recover almost as quickly.
Read Karishma's blog in full
The falling FTSE: Should we worry?
Duncan Weldon: China share falls - why it's not 2008
10th session
in a row that the FTSE has fallen
8.5% fall in Chinese stocks - biggest one day loss since 2007
$42.51 Brent crude fell to lowest level since March, 2009
-2% At one point, the pound saw the biggest fall against the euro in six years
China's central bank devalued the country's currency, the yuan, two weeks ago, raising fresh concerns that a slowdown in the country's economy was worse than originally feared.
Currencies and commodities are also falling sharply, because those markets rely heavily on strong demand from China.
Without strong reassurances from officials in China, investors have not had much reason to buy.
Beijing's official mouthpiece has called it China's "Black Monday".
The Shanghai Composite tumbled by 8.5%, its biggest fall since 2007. That plunge wiped out this year's gains as investors refused to buy into the Chinese government's repeated attempts to shore up confidence.
Everyone wants to know what the Chinese government is going to do next to shore up shares and confidence in the economy.
The smart money is on the central bank reducing interest rates and injecting a semblance of consumer confidence into the markets.
That is what many had hoped would happen over the weekend.
But at each point in what appears to be an ever-deepening Chinese slowdown, the government has seemed slow to react.
Selling that started earlier this summer has gained momentum, experts say.
"It does appear that we're moving very quickly to the downside," said David Madden, market analyst at IG.
Widespread investor fears about the sharp drops in Asia were exacerbated by thin trading volumes in Europe, with many investors away on holiday.
"I think more uncertainty lies ahead," Mr Madden said.
Investors might have to wait for several weeks for bargain hunters to come into the market to lift stocks.
Beijing's latest intervention, to allow its main state pension fund to invest in the stock market, failed to calm traders' fears, both in China and abroad.
Over the past week, the Shanghai index fell 12%, adding up to a 30% drop since the middle of June.
The sharp fall sparked a global sell-off, with the Dow Jones in the US losing 6%, while the FTSE 100 posted its biggest weekly loss this year, of 5%.
Earlier this month, the Chinese central bank devalued the yuan in an attempt to boost exports.
European investors worry that a cheaper Chinese currency will make European exports less competitive.
In other developments:


Chelsea are set to complete the £23.3m signing of Juan Cuadrado, Fiorentina coach Vincenzo Montella has said.

The Colombia winger, 26, has already agreed personal terms with the Premier League leaders and is expected to have his medical in London on Friday.
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The fee could rise to £26.8m - Cuadrado's release clause.
Mohamed Salah, 22, is likely to go on loan to Fiorentina as part of the deal, with another winger - Andre Schurrle - in talks with Wolfsburg.
Montella said: "It was a sale that had to be done.
"The club has done the right thing because we are also getting a very good player. Naturally, we need to understand how long Salah will need to adapt to our football as it's different from the English and Swiss leagues.
"From a defensive standpoint, Cuadrado guarantees us a lot more than Salah. Cuadrado is a player that has always arrived with a smile and given everything to Fiorentina.
"I am convinced that if he could have played tomorrow against Genoa he would have. I'm happy for him because he is going to a big club."
Germany forward Schurrle, 24, is almost certain to leave before Monday's transfer deadline. Wolfsburg have opened discussions on a potential £22m deal.
"James Rodriguez was Colombia's undoubted World Cup star - but Juan Guillermo Cuadrado was not far behind.
"Chelsea's new acquisition solved Colombia's tactical problem. The defensive line had to sit deep to protect veteran centre back Mario Yepes.  It was Cuadrado who kept dragging the team forward and opening up the pitch with his sustained pace and effervescent dribbling down the right flank.
"He is at his best as a wide right-midfielder - especially as over the last couple of seasons he has started scoring more goals. But he can also feature as an attacking right-back, or cut in from the other flank.
"Some three years ago a Premier League giant had a look at Cuadrado but concluded that he was too old - a strange decision given that he is still only 26, and should be looking forward to playing his prime years under Jose Mourinho, who will certainly enjoy the pace on the transitions that his new Colombian acquisition will bring to the side."


Construction of planned improvements to a challenging hairpin bend on the A9 at Berriedale Braes could begin next year, the Scottish government has said.

The trunk road drops from 150m (492ft) to 20m (65ft) as it enters a valley at the braes in Caithness.
There have been accusations from business leaders and politicians that the problem with this section of the A9 was being "ignored".
Documents key to progressing the improvements have been published.
The documents, called made orders, are part of the process towards eventually appointing a contractor and then starting work in 2018, Transport Minister Humza Yousaf has said.
He added: "The Scottish government has been working to progress the much-needed improvements to the A9 at Berriedale Braes.
"The hairpin bend and steep hill at Berriedale Braes has presented drivers, in particular HGVs and other long vehicles, with a very challenging road to negotiate.
"Having got the go-ahead last December following the public local inquiry, we are now able to publish the made orders for the scheme as a clear signal of our commitment to deliver this scheme."


British number two Heather Watson secured her best win of 2016 as she beat Caroline Wozniacki 7-5 6-4 in the Monterrey Open quarter-finals.

Watson broke the former world number one in the penultimate game of the first set in Mexico and sealed victory when the Dane hit a forehand wide.
The 23-year-old plays France's Caroline Garcia in Saturday's semi-final.
Earlier, fellow Britain Johanna Konta lost 6-3 6-7 (2-7) 6-1 to world number 73 Kirsten Flipkens.
Watson has slipped down the rankings to number 84 this year and Saturday's encounter with Garcia will be her first semi-final since winning in Hobart in January 2015.
"I thought I played very well," said Watson. "I needed to against Caroline because she's a great player - and I had to fight to the end because I knew she would."
Konta, ranked 27th in the world, was a set and a break down but broke back to level the second set at 5-5 before winning it in the tie-break.
However, she won only one more game as Belgium's Flipkens reached the last four.
Elsewhere, British number three Naomi Broady lost 6-4 6-3 to sixth seed Eugenie Bouchard in the Malaysian Open semi-finals.


A woman has been charged in connection with reports of the assault of young children at a private nursery in Fraserburgh.

Police Scotland said a 20-year-old woman had been reported to the procurator fiscal.
The force said it was been working closely with the Care Inspectorate.
The Care Inspectorate said it was currently in the process of inspecting the nursery.


Consumers are facing a "customer service lottery" among energy companies, a charity has said as it called for a wider review of complaint levels.

Citizens Advice said there was a gulf between the best and worst performing energy firms' service to customers.
Scottish Power recorded the highest number of complaints - 944 per 100,000 customers between April and June.
SSE was the best-performing with 47 complaints per 100,000 customers.
Scottish Power blamed teething problems with a new computer system for the high complaint rate, but said it had now taken on more staff to answer calls quicker.
The figures were drawn from complaints made to the Citizens Advice Consumer Service, the Consumer Futures Extra Help Unit, and to Ombudsman Services.
First Utility, Spark Energy, Npower and Co-operative Energy all had more than 400 complaints per 100,000 customers, according to the data.
Seven suppliers had fewer than 100 complaints per 100,000 customers: SSE, EDF Energy, Ecotricity, British Gas, E.On, Good Energy and Green Star Energy.
The Competition and Markets Authority is investigating competition in the energy market. Citizens Advice argued that this should include a review into customer service.
"We have long called for a more competitive energy market and transparency on complaints across the board can help to support that," said Gillian Guy, chief executive of Citizens Advice.
"Consumers need the whole picture on energy suppliers, so they can choose who to buy their energy from on the basis of what is most important to them whether that's price or service.
"Complaints are a significant part of this, and people will rightly question why some energy firms have nearly 20 times as many complaints as others."
Lawrence Slade, of Energy UK, which represents the major energy suppliers, said there were options available for customers who were not happy.
"It is great to see a number of suppliers working hard to put their customers first. However, no one wants to see complaints spiral out of control. Most grievances are dealt with by the end of the next working day with no more than a phone call," he said.
"The key thing here is a range of choice comes into play when shopping around for energy. Customers can consider fuel type, cheaper tariffs and good service when choosing their supplier. Smart meters will also significantly iron out any issues relating to billing when they roll-out in the next few years."


Italian rider Davide Cimolai claimed a narrow victory in a sprint finish on the opening stage of the Volta a Catalunya in Spain.

The FDJ rider edged out Frenchman Nacer Bouhanni, of Team Cofidis, at the end of Monday's 179km stage in Calella.
Chris Froome, Alberto Contador and Alejandro Valverde - the favourites for victory in the seven-stage race - finished safely in the pack.
Tuesday's stage is a 41.3km team time trial in Banyoles.


Medway's service for children in care has been rated as inadequate in a report by the education watchdog.

Ofsted's inspectors said there were 400 looked-after children and 209 with "care-leaver" status when the inspection was carried out in July.
The report highlighted delays in the completion of health assessments and a shortage of nurses.
Medway Council said it was making "significant progress" and improvements would continue.
Ofsted inspectors said following a previous inspection in January, work in Medway had focused on ensuring all children were safe.
The report said: "However, many changes have been recent and have not yet had the opportunity to impact, so deficits within services for looked-after children remain.
"Inspectors saw no looked-after child at immediate risk of harm.
"Overall, outcomes for children and young people looked after are poor in relation to their emotional health and wellbeing, their educational achievement and continued opportunities for education, employment and training."
The inspectors rated the service's "capacity to improve" as adequate, saying the local authority was "actively addressing inadequacies".
The report praised Medway's record in avoiding changes in children's placements, saying a "high number" remained for more than two years.
Councillor Mike O'Brien, lead portfolio holder for children's services at the Conservative-run council, said: "We are making significant progress.
"The council brought in a completely new top team when it realised that much work needed to be done to improve this area and we are pleased that Ofsted have recognised this."
The council said it was recruiting more social workers, a new director of social services and a new service manager for children in care.
Directory of children's services Barbara Peacock, who joined last September, said "There is a lot of work to do, and we are clear on that fact, but Ofsted acknowledges we are heading in the right direction.
Councillor Adam Price, the Labour group's spokesman for children's services, said: "I'm deeply worried.
"We're hearing that no child is under immediate risk, but it is worrying that there seems to be poor quality in terms of information on children when they come into care and also go out of care."
He said the authority was having to go as far as Ireland to recruit social workers.


The growth of the i title has helped drive a rise in sales for Edinburgh-based newspaper publisher Johnston Press.

Sales in September of the compact, which costs 50p, were up 4% to an average 290,000 per day.
However, revenue for the group, which also publishes The Scotsman, fell 3% between July and October when compared with the same period last year.
The figures came on top of a 9% fall in revenue for the first half of 2016.
The growth of the i resulted in the title taking a 20% share of the so-called "quality segment" of Britain's newspaper market.
Without the i, the figures fell more sharply, with revenues down 16% in the past three months.
Advertising revenue without the new title was also down 12%, while circulation revenue dropped by 10%.
Digital advertising, seen as a way of replacing declining revenue from paper sales, fell during the summer-autumn period by 3%.
Despite the figures, Johnston Press saw its share price rise slightly to 14p.
It has fallen from 66p a year ago, and fell below 9p before a surge in September, when an activist investor became involved in moves to change the publisher's strategy.
Last month, it announced a deal with creditors to change the conditions on some of its borrowing, giving it more time to raise finance by selling assets.
That is expected to include newspaper titles.


The government has described the housing market as broken, promised more affordable homes and said it would help people to buy and rent.

The claim: The green belt is safe from an increase in development.
Reality Check verdict: The rules for developing green belt previously said that it was allowed only in exceptional circumstances. The government has now specified what would count as exceptional circumstances. It is not clear whether the new rules will be more or less strict than just letting councils decide what counted as exceptional circumstances.
A big question in discussions of increasing the supply of homes is whether planning regulations will be changed to make it easier to build on green belt land.
Green belts were introduced after World War Two to stop cities from sprawling and countryside being spoilt. About 13% of England is now covered.
This covers scenic sites open to the public, such as the Chiltern Hills and North Downs, but it also covers a lot of land that has limited public access and may not be particularly beautiful.
In the House of Commons, Communities Secretary Sajid Javid said: "In 2015, we promised the British people that the green belt was safe in our hands and that is still the case."
So what has changed?
There has been little variation in the amount of green belt land since 1997, although data is not available for every year.
The Housing White Paper says the current planning regulations allow building on the green belt only "in exceptional circumstances" but that there is no detail given of what would amount to exceptional circumstances.
The government has now specified that before allowing development on green belt land, councils would need to rule out options including:
The White Paper also says that councils allowing the boundaries of green belt land to be changed would have to make up for it by improving other bits of green belt.
It also asks for suggestions of other things councils should take into account before doing so.
Read more from Reality Check


A terrorism suspect shot dead in a raid in a Brussels suburb on Tuesday has been identified as Algerian national Mohamed Belkaid, officials say.

He was killed by snipers while trying to fire at police from an apartment window in the suburb of Forest.
Four officers were wounded in the raid. Police are still hunting two suspects who were in the apartment.
The raid was linked to an investigation into the jihadist attacks in Paris that killed 130 people last November.
The so-called Islamic State (IS) militant group said it carried out the attacks.
According to the prosecutors' spokesman, an IS flag was recovered from the apartment raided on Tuesday, along with Salafist (ultra-conservative Islamic) literature and Kalashnikov ammunition.
The spokesman told reporters that Belkaid was born in 1980 and had been living in Belgium illegally. He was not known to the authorities except for one case of robbery.
Police went to search an apartment in Forest on Tuesday afternoon. As they entered, they were fired upon by at least two occupants, the spokesman said.
While Belkaid was shot dead that evening, two suspects who were with him managed to escape and became the subject of a police manhunt.
The prosecutor's spokesman said further searches were carried out near the apartment, and more ammunition was recovered.
Two men arrested later - including one who was brought to hospital with a broken leg - have since been released without charge.
Much of Forest was under lockdown on Tuesday, including schools and kindergartens.
Belgium's De Standaard newspaper (in Dutch) quotes its sources as saying that investigators had been expecting to raid a safe house used in connection with the Paris attacks.
They had not expected the flat to be occupied, as its water and electricity had been disconnected for some time.
Officials have identified most of the people they believe to have carried out the assaults on 13 November - many of whom were based in Brussels.
Most of the suspects either died during the attacks or were killed in later police raids.
Parts of Brussels were sealed off for days after the Paris massacre amid fears of a major incident. Brussels police have carried out a series of raids.
French police also took part in Tuesday's operation in Brussels. One of the officers wounded in the raid was a French policewoman, officials said.
Information provided by the Belgian prosecutor's office on 16 March 2016


The Secretary of State, Theresa Villiers, says she sees no reason to have an All-Ireland Forum to look at the issue of Brexit.

The idea was proposed by the Taoiseach (Irish prime minister) Enda Kenny.
However it appeared to have been dropped this week after the DUP gave it a cool response.
Ms Villiers said co-operation between the Irish and British Governments alongside the Executive was vital.
She added the current North South Bodies were working well, advising "I haven't seen a case for a fresh body to be added to the current structures".
She has also denied the Chancellor of the Exchequer's announcement that he was going to cut Corporation Tax across the UK to below 15 per cent was a blow to Northern Ireland,
She described it as a "big plus" and a "tremendous opportunity".
"It makes 12.5% for Northern Ireland more affordable for the Executive to deliver," she added.


Thousands of pounds from NHS "personal health budgets" are spent on "treats" such as holidays and clothes, a Freedom of Information request has found.

Pulse magazine said money had also gone on horse riding, art classes, massage, and, in one case, a summer house.
The budgets were brought in to give people in England with long-term conditions more control and choice over their healthcare and support.
NHS England said all spending had to be agreed with the health service.
Patients decide with medical professionals how the money from their personal budget should be spent.
It can be used on services such as therapies to help with depression, and assistance with personal care such as dressing and washing.
Pulse, a magazine for GPs, used the Freedom of Information Act to find out how personal health budgets were spent in England in 2014-15.
Full responses were obtained from 33 clinical commissioning groups (CCGs) out of 209.
The British Medical Association said it continued to have real reservations about the scheme and "the inappropriate use of scarce NHS money on non-evidence based therapies".
Dr Richard Vautrey, deputy chairman of its general practitioners' committee, said: "While individuals may themselves value a massage or summer house, others will understandably start to question why they can't also have such things paid for by the state - and that will just fuel demand."
Nigel Praities, editor of Pulse, said readers of the magazine had reacted to the story with "dismay".
He said: "Doctors have to follow the evidence, they have to make sure everything they do is effective. To see in other areas of the NHS money maybe being spent on things that doesn't have such evidence behind it, particularly at a time when the NHS is trying to save lots of money, is hard to swallow."
Mr Praities added that the problem with the funding was that it "may give a lot of choice to a small number of patients but actually, overall, it might actually reduce choice".
Simon Duffy, from The Centre for Welfare Reform think tank which came up with the idea of personal health budgets, said the money is meant to be spent in less conventional ways.
"There would have been no advantage in people carrying on spending the money exactly as the NHS used to spend the money."
He said personal health budgets made up a tiny percentage of NHS spending and was assessed and approved by health professionals.
"You cannot simply turn up to your GP and ask for a summer house."
Malcolm Royle's family decided a care home would not be right for him after he developed dementia symptoms in 2005.
They used a personal care budget of £46,000 to devise their own care plan, which allowed him to live at home until he died in April.
One of the items they bought him was a Sky+ box.
Mr Royle's son, Colin, said: "It might seem quite an unusual item to purchase with NHS money but it was a great success and the outcomes were terrific.
"We were able to record all of his favourite television programme and play them at times of day that suited him as well.
"We could also fast forward adverts. These caused him a lot of anxiety."
He added the Sky+ box had ultimately helped to "stimulate" his father and reduce his anxieties.
A spokesman for NHS England said: "Personal health budgets are designed to meet identified health needs in ways that give patients more control over the care and support they receive.
"The spending must be agreed between the individual and the NHS, meet the patient's individual health needs and achieve the desired outcomes.
"An independent evaluation has shown that personal health budgets are cost effective, help people manage their health and improve quality of life."


At least four people have been killed in fresh protests in Burundi, witnesses say, after President Pierre Nkurunziza vowed not to seek a fourth term.

A government supporter was burnt alive and an opposition supporter was shot in the head, the witnesses said.
The African Union (AU) has joined the US in urging Mr Nkurunziza to drop his plans to seek a third term at elections due in June.
The unrest is the worst in Burundi since a civil war ended in 2005.
Seventeen people have now been killed in almost daily protests since Mr Nkurunziza announced late last month that he would seek to extend his 10-year rule.
The government has denounced the protesters as "terrorists" who were leading an "insurrectional movement".
Witnesses told the BBC that in the latest violence three opposition supporters were killed - two were shot by police while the third was killed in a grenade attack blamed on supporters of the ruling CNDD-FDD party.
A member of the party's youth wing, Imbonerakure, also died after being set on fire by protesters in what appeared to be a revenge attack, the witnesses added.
The violence took place in the capital, Bujumbura, and in Gisozi, a rural area about 50km (30 miles) away.
This is the furthest that the protests have spread, correspondents say.
AU commission chief Nkosazana Dlamini-Zuma said elections could not be held in Burundi in the current climate.
"Other than the Burundi court, all interpretation that we get about the constitution is that... really there shouldn't be a third term," she told Chinese broadcaster CCTV.
In a televised address on Wednesday, Mr Nkurunziza called for an end to protests so that the election could go ahead peacefully.
He vowed it would be his last term and said all those arrested would be released if the protests stopped immediately.
Foreign ministers from four Eastern African states are in Burundi in an attempt to end the crisis.
Latest African news updates
Protests shake economy
Pierre Nkurunziza in profile
Last week, the US accused Mr Nkurunziza, a former rebel leader, of violating the 2005 peace accord by seeking re-election.
Burundi's constitutional court ruled on Monday that Mr Nkurunziza can run for a third term.
The ruling came after the court's vice-president, Sylvere Nimpagaritse, had fled Burundi, saying the court had been under pressure to endorse Mr Nkurunziza's re-election bid.
The president's spokesman Gervais Abayeho denied that judges had been threatened or pressured.
Under the constitution, presidents can only be elected to two terms in office but it was argued that his first term does not count as he was appointed by parliament.
The UN refugee agency says that more than 20,000 people have left for neighbouring countries because they fear violence could escalate in Burundi.


Widnes Vikings remain bottom of Super League after losing to St Helens, who climb to sixth.

Having slipped back to 12th after Leigh Centurions won on Thursday, Widnes started poorly at the Totally Wicked Stadium and trailed 10-0 at half-time.
Mark Percival, Regan Grace, Alex Walmsley, Ryan Morgan and Theo Fages all went over for the in-form Saints.
Vikings did cross through Ryan Ince and Danny Craven after the break, but they still suffered a 13th loss from 18.
Percival successfully kicked at goal three times for the hosts to add to their tally, on the night of former Harlequins prop Louie McCarthy-Scarsbrook's 300th career appearance.
Vikings had got back to within six points of Saints when Ince finished in the corner shortly after half-time, but Craven missed the conversion and the hosts soon extended their lead.
Victory was the hosts' eighth of their league campaign so far, moving them to within five points of fifth-placed Wakefield.
St Helens head coach Justin Holbrook:
"I was really disappointed last week in what we didn't do against Castleford and this week we really improved and that's what really pleases me as a coach as we've worked on a few things.
"We have a good squad and everyone needs to know they need to play well to keep the jersey.
"We executed really well. A lot of that was Jonny Lomax coming into it but our middle was excellent. It was a real combination of everyone coming together.
"Regan (Grace) and Percy (Mark Percival) are putting a real combination together and it was great to see."
Widnes boss Denis Betts:
"We got beaten by a better side and sometimes you have to hold your hands up and say that. We just didn't have enough to get over the line.
"They took their opportunities, we didn't take ours. In the second half we didn't have any ball and did an awful lot of defending. It was one of those times where they built pressure and got the job done.
"It's disappointing as we had turned a corner in the last month or so. I don't want to make excuses. They manufactured two quality tries in the second half."
St Helens: Lomax, Makinson, Morgan, Percival, Grace, Fages, Smith, Walmsley, Roby, Amor, Taia, Wilkin, McCarthy-Scarsbrook.
Replacements: Douglas, Thompson, Knowles, Richardson.
Widnes Vikings: Johnson, Ince, Marsh, Runciman, Thompson, Chase, Heremaia, Dudson, Johnstone, Buchanan, Whitley, Houston, Cahill.
Replacements: Manuokafoa, Chamberlain, Olbison, Craven.
Referee: Scott Mikalauskas.


Uganda striker Farouk Miya is set to sign for Belgian giants Standard Liege from Vipers Sports Club.

The clubs have agreed a fee of about US$400,000 for the 19-year-old and hope to complete the deal after the African Nations Championship in Rwanda.
Miya scored a penalty and made an assist in a 2-2 draw with Mali in Uganda's opening match of the finals.
However, he will miss his Saturday's match against Zambia as a precaution to help him overcome a shoulder problem.
Last season Miya scored 11 goals and made seven assists to help Vipers win the Uganda Premier League trophy.
If he can agree personal terms with Standard Liege, it will bring an end to a two-year spell with Vipers.


More than 170 sharks have been caught on lines under a controversial cull policy in Western Australia.

Drum lines were set up along seven Western Australian beaches as part of a trial between January and April. Fifty of the biggest sharks were destroyed.
Authorities said the cull was necessary after six people were killed in shark attacks.
No great white sharks, to whom most of the attacks were attributed, were caught.
Australia's state government said the cull was successfully restoring confidence among beachgoers.
It is seeking to continue the programme for three more years.
"I think the strategy's gone very well, bearing in mind that it's a very broad strategy, and that's basically to protect those people that swim in those popular areas," Western Australia Fisheries Minister Ken Baston said.
"While of course we will never know if any of the sharks caught would have harmed a person, this government will always place greatest value on human life."
Protesters argue that a shark cull is not the answer and would only damage the sea's delicate ecosystem.
"The policy is very unpopular, it has hardly caught any of the sharks it was destined to catch," said Labor fisheries spokesman Dave Kelly.
"What people want is scientific research to show why the government thinks this policy makes our beaches safer."