Police are investigating cases of possible fraudulent voting at a number of Scottish election counts.

In Glasgow, officers said they were looking into one case of "personation".

Image source, PA

A similar allegation involving a vote cast at a polling station in the Cumbernauld, Kilsyth and Kirkintilloch East constituency was also being probed.

Claims of personation in two Edinburgh constituencies - South and South West - have also been reported.

Prof Charlie Jeffery
University of Edinburgh

"We are hearing an extraordinary mood from the various counts around the country.

"Pretty much everywhere in the country is reporting the SNP are in a really good mood and the other parties are not.

"We are talking about seats where the swing to the SNP would be more than 20% on some occasions.

"We were looking earlier and we could find very few historical examples where there has been a swing of more than 20% in a seat in a UK election ever.

"We might see quite a few of those ever. If we get to 22% swing we think we have broken the record. That would be Rutherglen and Hamilton West."

Turnout figures from across Scotland have been coming in:

• Stirling - 77.7%

• Midlothian - 71.3%

• Rutherglen and Hamilton West - 69.6%

• East Dunbartonshire - 82%

• East Kilbride, Strathaven and Lesmahagow - 72.8%

Image source, Getty Images

Former Labour cabinet minister Lord Mandelson says his party has been "squeezed" by two nationalisms, promoted by the SNP and the Conservatives.

He says Ed Miliband has conducted a very professional campaign with "conviction and vigour" and all three main British parties appear to have lost the election.

Image source, Getty Images

Steven Duff
BBC Scotland reporter

#GE2015 SNP source says they look like winning Aberdeen North from Labour by "landslide". Aberdeen South "tighter" but still looking like an SNP win.

Laura Kuenssberg
Chief correspondent, Newsnight

Image source, AFP

The SNP have been urging caution on the exit poll. But signs coming out of Scotland so far don't clash with what we are hearing out of Scotland. We're hearing whispers that they have won all of the seats in South Lanarkshire, North Lanarkshire, and Glasgow, pictured above. And it sounds like Alex Salmond is on his way back to Parliament, the Westminster one anyway. Whether they hit the 58 of the BBC exit poll is a separate question, but a fundamental change is taking place tonight in the shape of the UK's politics.

Sam Poling
BBC Scotland

"I have been told that Labour MP for Dunfermline and West Fife, Thomas Docherty, intends to turn up here a minute or two before the declaration and leave immediately afterwards.

"The Liberal Democrat candidate, Gillian Cole-Hamilton, has actually said she is not coming because she has childcare issues.

"The SNP candidate Douglas Chapman has been here all evening.

"Read into that what you will.."

Catriona McLean
BBC Scotland

Here is a picture of the Barra ballot boxes arriving in Eriskay, South Uist.

They were transported there by boat, then taken up the road to Balivanich airport and are now on their way, by plane, to the counting centre in Stornoway.

Aileen Clarke
BBC Scotland

Ruth Davidson, leader of Scottish Conservatives arrives at Glasgow Count #GE2015

Sally McNair
Reporter, BBC Scotland

Turnout in East Renfrewshire is 81.2% - with 56,825 votes cast. The mood amongst Labour activists appears downbeat.

If the SNP candidate Kirsten Oswald takes the seat from Scottish Labour leader Jim Murphy, it will take the Nationalists from fourth place to first with a swing of over 21%.

The SNP have had more than 300 people out campaigning - including one ardent supporter who, bedecked in yellow jacket accompanied by his terrier in a matching jacket, walked around the constituency for six hours a day.

Colin Blane
BBC Scotland News

Labour candidates in Glasgow not speaking to press, may have lost all their seats.

North Lanarkshire's returning officer Gavin Whitefield issues a statement concerning allegations of impersonation.

He says: "Following an allegation of personation at a polling station in the Cumbernauld , Kilsyth and Kirkintilloch constituency, the police are investigating.

"We will verify the ballot box in question in isolation to help to provide evidence for the police inquiry. No other polling stations or ballot boxes are affected."

Scottish Political Editor of Sunday Herald Tom Gordon:, external Senior SNP source says 30-something seats "realistic", 40-plus "phenomenal". Sounds like we're being readied for "phenomenal result".

Kevin Keane
BBC Scotland reporter

Sir Malcolm Bruce says if polls are true would be first time no Scottish ministerial rep in UK government which would be bad for democracy and bad for Scotland #GE2015

Chris McLaughlin
BBC Sport

One Labour member here at Bathgate count, in tears. Apologises to MP Michael Connarty saying: "I just wish there's more we could have done."

Labour source saying Edinburgh South could be "very close". Could labour's Ian Murray hold on?

Labour's Tom Harris tells Aileen Clarke it seems unlikely he will be returning to the green benches of the House of Commons next week.

"What do you put that down to?" asks Aileen.

"Not enough votes mainly," replies Mr Harris.

Jamie McIvor
BBC Scotland correspondent

Police investigating allegation of personation at a polling station in Cumbernauld Kilsyth and Kirkintilloch East constituency.

Ballot box being verified in isolation. Rest of the count continuing.

David Miller
BBC Scotland

Labour source says there are claims of personation in two Edinburgh constituencies: South and South West.

No confirmation but Edinburgh City Council is promising a statement "within five minutes".