Britain's main political parties crisscrossed the country to woo wavering voters, but they also courted each other as opinion polls indicated that the national election could produce no clear winner (Reuters).
Britain's Liberal Democrat leader Nick Clegg speaks during an interview at the LBC Radio studios in London, ahead of a day of General Election campaigning across the country (AP).
Clegg wears scarves given to him by Ghurkas during a general election campaign stop in Blackheath, South London (Reuters).
Clegg and his wife Miriam Gonzalez Durantez applaud a singer during a general election campaign stop at the Palace Project in Streatham (Reuters).
Prime Minister Gordon Brown greets a woman as he walks along the seafront in Great Yarmouth, eastern England. Brown acknowledged that if his party slumps during the election, he'll take the blame — a comment interpreted as meaning he'd likely quit as party leader just three years after replacing Tony Blair in that role (Reuters).
As Britain's national election looks more and more likely to deny any of the three major political parties an outright majority, there is the potential for the first so-called "hung Parliament" since 1974 (AP).
Seeking to retain power, Gordon Brown's Labour Party may seek a formal coalition, or looser pact, with the Liberal Democrats and their leader Nick Clegg (AP).
One scenario has Conservative candidate Cameron (pictured) seeking support from the third-placed Liberal Democrats and minor parties to pass votes to endorse an emergency budget aimed at cutting the country's 152.84 billion pound ($235.9 billion) deficit. Cameron would likely call a second election within a year to seek a majority (Reuters).
If Cameron's party is left well short of the 326 Commons seats needed to win a majority, it may seek a pact with the Liberal Democrats. Though opposed on many policies — including electoral reform — the two could strike a short-term agreement aimed at tackling Britain's deficit (Reuters).
Cameron and his Conservative party could stand to benefit if Britain has a quick second election. In this scenario, both the Labour party and the Liberal Democrats may struggle to afford a second campaign (Reuters).
As the UK prepares to vote for members in the House of Commons, party leaders Gordon Brown (Labour), David Cameron (Conservative), and Nick Clegg (Liberal Democrat) are hot on the campaign trail across the UK.