SNP deputy leader Stewart Hosie will not predict how many seats he thinks his party will win.

"We have only set one target, that is to be the biggest party in terms of seats and votes," he says

"I'm not going to put a number on it because every seat is different."

Ballot boxes taking to the air in Orkney.

The Scottish Sun's election coverage...

Image source, Scottish Sun

Brian Taylor
Political editor, Scotland

Senior Lib Dem Malcolm Bruce conceding that Alex Salmond is set to take Gordon for the SNP.

Kevin Keane
BBC Scotland reporter

Sir Malcolm Bruce speaking to Glenn Campbell from Aberdeenshire count. Accepts Gordon is lost #GE2015

Gourock's Michael Burrows is the youngest candidate in the UK in this General Election.

The UKIP candidate for Inverclyde is 18 years, two months and one day old.

He told BBC Scotland: "You're asking for people's trust and young people are just as capable of earning that trust. With young people being involved in the Scottish referendum, the idea that we should just shut up and get back in our box didn't seem right to me.

"You've got to have every part of society represented."

Andrew Thomson
BBC Scotland

A senior Labour source says that it looks like the SNP have won all three Highland seats; adding that the Labour vote has been badly squeezed.

Davy, Aberdeenshire: Why are the Unionists blaming 'tactical' voting? Can they not accept that the SNP are a viable and progressive option? Does the BBC deliver pizza to Aberdeenshire? Long night ahead...

BBC Scotland's Laura Maciver

Declaration from Kilmarnock and Loudoun #GE2015 is expected at about 01:30

Reevel Alderson
Home affairs correspondent, BBC Scotland

Officials at Bishopbriggs, where the count for Dunbartonshire East is taking place, have predicted the turnout will have been more than 80%.

At the last General Election, in 2010, the turnout was 75% - but the constituency had the highest proportion of voters anywhere in Scotland in last year's Referendum: a whopping 91%.

Jamie McIvor
BBC Scotland correspondent

SNP sources confident they will win Motherwell and Wishaw.

Political commentator Iain Macwhirter says that even if the SNP get more than 50 MPs it is still a small number of the 650 total.

"So their impact is going to be minimal if they don't hold the balance of power," he adds.

"According to the exit poll, they will not hold the balance of power."

Former Labour first minister Henry McLeish said the results could "defy the rules of electoral politics".

"If, for instance, Gordon Brown's old seat was in jeopardy that would be, by any objective measure, remarkable," he says.

"We are into new territory. Something fundamental is at work..."

Jane Lewis
BBC Scotland

Ladies and gents we have the ballot boxes from #Arran. After they're verified - counting will begin. #GE2015

In Douglas Alexander's seat, turnout has been 75.5%.

Having seen how social media engaged voters during last year's referendum, politicians from all parties have been joining everything from Facebook and Twitter to Instagram, Vine and Snapchat in a bid to reach out to a younger and more digitally savvy electorate.

But are politicians using these platforms effectively to get their message across? And does their social media effort actually translate into votes?

During the final two weeks of the general election campaign, eight young voters from the BBC's Generation 2015 panel closely monitored Scotland's political parties and most prominent figures.

They told the BBC Scotland news website who they thought got it right in the battle for Scotland's young voters.

Political Editor of the Scottish Daily Mail Alan Roden: , externalSenior LibDem source: Danny Alexander has lost. #ge2015

He also tweets, external: Source: #Labour's Jim Murphy in "deep trouble" in East Renfrewshire. #ge2015

Catriona Renton
BBC Scotland

SNP agent in Rutherglen and Hamilton West says he predicts 54% for SNP, 36% for Labour - based on sampling. He told me he's been doing this a long time!

Ken Macdonald
BBC Scotland

Safest prediction of the night? Looks like turnout in all three of these seats will be well up on last time.

Kevin Keane
BBC Scotland reporter

The SNP has carried out an exit poll at four polling places in Gordon and they say that Alex Salmond is going to win comfortably.

The Lib Dems who won the seat last time had said that people on the doorsteps had been telling them they didn't like the former SNP leader. But tonight the Lib Dems are pretty downbeat.