**David Cameron is campaigning through the night from Scotland to Bristol, chasing votes in the final hours before the UK goes to the polls.**He will visit fishermen in Grimsby and other shift workers across the country.
Gordon Brown has visited a Sheffield steelworks while Nick Clegg travelled to Labour territory in Glasgow.
The leaders are making last-minute appeals to undecided voters who may settle the result of what polls suggest is the closest contest in years.
Mr Brown has urged voters to “come home to Labour”, while Mr Clegg said the Lib Dems could change “Britain for good”.
Mr Cameron is campaigning on a “simple message” of change.
The leaders of the largest three parties acknowledge that millions of voters have yet to make up their mind.
Addressing supporters in Manchester on Tuesday evening, Mr Brown urged people to “stick with me” as the man who “will secure your future”.
While Labour had changed the UK “for the better and for ever” since 1997, Mr Brown said his opponents posed “too big a risk” to the economic recovery and to the future of public services.
He accused the Conservatives of “living a lie”, saying their plans to cut spending this year was incompatible with safeguarding schools, the health service and police services.
“Scratch the surface. The Tories may have changed their tune but they have not changed their minds,” he said.
Mr Brown, who later visited steelworkers on a night shift in Sheffield, has vowed to fight “every inch” of the way until the end of the campaign.
Lord Mandelson, who is co-ordinating Labour’s campaign, has said the election is going “down to the wire”.
‘Read my lips’
Mr Cameron told Conservative supporters in East Renfrewshire that the election was “not yet decided” and launched his most personal attack yet on the prime minister.
Accusing Labour of the most “negative campaign anyone has fought in the history of modern British politics”, he said they had made up “untruth after untruth” and claims the Tories would cut benefits for pensioners, such as the winter fuel allowance, were scaremongering.
Under a Conservative government, he said these benefits were safe, adding: “You can read my lips. That is a promise from my heart.”
Mr Cameron has taken the unprecedented step of campaigning overnight, talking to bakers, fishermen and ambulance drivers in Cumbria, Lancashire, Yorkshire and Lincolnshire.
“We are going at it all night and all day.. all the way to polling day,” he has said. “That is the way we are going to win the election.”
Lib Dem leader Nick Clegg is urging disaffected Labour supporters to come over to him, saying they had been taken “for granted” and his party was the only progressive alternative.
Visiting a handful of target seats on Wednesday, Mr Clegg will urge people to get out and vote.
“We cannot let politics as usual triumph,” he will say. “If change is what you want, don’t let anything or anyone stand in your way.”
Up for grabs
The BBC’s political editor, Nick Robinson, said the three men were aware that the future of British politics, as well as their own personal futures, was up for grabs in the next 36 hours.
Amid continuing speculation about what will happen in the event of an inconclusive result, the Daily Telegraph reported that the Democratic Unionists might be willing to back the Tories if they emerge as the largest party, enabling them to form a government.
The paper said any agreement would hinge on Mr Cameron agreeing to protect Northern Ireland from spending cuts this year.
But a Conservative party spokesman dismissed any suggestion of a deal with the Democratic Unionists as “tiresome and rubbish”.
“The fact is that David Cameron believes in the deal he has got with the Ulster Unionists,” he said.
“It is clear that these briefings are coming from the DUP to try to de-stabilise our relationship with the Ulster Unionists.”
Visiting Northern Ireland on Tuesday, Mr Cameron said Northern Ireland would not be “singled out” for spending cuts over and above any other part of the UK.
In the Financial Times, shadow chancellor George Osborne said the Tories, if elected, would cut public spending, leading to what he termed “a lower public sector headcount”, balanced, he said, by a “private sector recovery”.
But he rejected as “foolish” Lib Dem leader Nick Clegg’s warning that big public sector cuts could lead to Greek-style unrest on UK streets.
The Sun, meanwhile, carries an endorsement of the Tory leader from TV talent show judge Simon Cowell, who declared David Cameron “the prime minister Britain needs at this time”.
One poll published on Tuesday suggests that Labour have made ground at the expense of the Liberal Democrats in recent days.
A YouGov daily tracker poll for The Sun, conducted on 3 and 4 May, puts the Conservatives unchanged on 35%, Labour up two points at 30% and the Lib Dems down four at 24%.
On the other hand, a Comres poll for ITV News and the Independent suggests there has been no change since its last survey on Monday. The survey has the Conservatives on 37%, Labour on 29% and the Lib Dems on 26%.This article is from the BBC News website. © British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.
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