The British Labour Party retains the seat of Barnsley Central following a by-election. The Lib Dems, who had come second at the 2010 general election slump to sixth place behind the British National Party and UKIP.
A specially convened Election court in the United Kingdom orders a re-run of the 2010 general election campaign in Oldham East and Saddleworth, the constituency of ex-immigration minster Phil Woolas, after he is found guilty of making false statements against an opponent during the original campaign.
Eligible voters in the United Kingdom general election, 2010 who are living in New Zealand are the latest to be disenfranchised as anger grows over the disfranchisement of citizens living in the UK who were queuing to vote as polls closed.
Conservative leader David Cameron launches his party's election manifesto, which he says is a "plan to change Britain for the better". He said the "optimistic" plan would bring a "new kind of government" with less state and more "people power".