General Election 2015: Where are the party leaders finishing their campaigns?

David Cameron finishes with rally in Carlisle, Ed Miliband avoids Kinnock-style Sheffield rally and heads to Leeds, Nick Clegg finishes in John o'Groats

The party leaders have been making their final visits and pitches of one of the closest campaigns in a desperate last-ditch bid to win over the vital undecided voters who will decide the fate of their political careers.

David Cameron finishes his mammoth 36-hour tour of the UK with a rally in the Conservative-held marginal constituency of Carlisle – a symbolic location on the border of England and Scotland where he will make a final warning of Scottish nationalists holding English voters to ransom.

David Cameron braves the weather in Devon

It is likely to be a futile last-minute visit to the seat however as polls have shown a strong swing over to Labour.

Tory incumbent John Stevenson won the seat by a slim 2 per cent margin in 2010 but a Lord Ashcroft poll showed Labour on course for a comfortable victory.

Ed Miliband has been focussing on a cluster of marginal seats in Yorkshire today and will end his campaign with a rally in the county.

Ed Miliband campaigns in Lancashire

But before anyone gets excited that Labour might have been stupid enough to arrange their rally in Sheffield – bringing back memories of Neil Kinnock’s disastrous and hubristic election rally when he repeatedly shouted “We're Alright" – the Labour leader will hold the rally in Leeds, which contains a mixture of Conservative, Labour and Lib Dem-held constituencies.

He is visiting a number of battleground seats in Yorkshire, where there are a number of seats Labour must win off the Tories to have a chance of winning the most seats, including Pudsey, Keighley and Cleethorpes.

Liberal Democrat leader Nick Clegg ends his marathon 1,000 mile journey from Land’s End to John o’Groats tonight, passing through key Lib Dem Scottish seats the party is desperately trying to hang on to.

They include Danny Alexander, the Lib Dem chief secretary to the Treasury, who is facing the humiliation of being booted out of his Inverness seat by the SNP. He is the Lib Dem seen as closest to the Tories having spent five years as George Osborne’s right-hand man at the Treasury overseeing the government’s austerity cuts.

Defeat for Mr Alexander would therefore make a second Coalition between the two parties less likely as they would have lost one of the four “Quad” members of the Cabinet that bound the two parties together – the other three being Mr Clegg, Mr Cameron and Mr Osborne.

Ukip leader Nigel Farage has decided to focus fully on his battle to win South Thanet, where he faces a nail-biting race against the Tory candidate Craig Mackinlay and Labour’s Will Scobie in a fascinating three-way contest.

Nigel Farage campaigning in Ramsgate, Kent (PA)

He has said he will stand down as Ukip leader if he fails to win the seat, making South Thanet the centre of attention for Thursday night’s election coverage.

Natalie Bennett decided to finish her campaign off in Bristol, where the Greens hope to take a Lib Dem scalp by stealing their student votes.

Natalie Bennett campaigns with Darren Hall, Green candidate for the party's target seat Bristol West (PA)

She is out campaigning with Green party candidate Darren Hall, who is fighting the Lib Dem Communities and Local Government minister Stephen Williams in Bristol West, but his challenge to the Lib Dems just makes a Labour win more likely.

They will then wait nervously for the results, while trying to get as much rest as possible, before the long night that will determine the rest of their political careers.