Now the talking stops: Britain goes to the polls in the most unpredictable election in a generation... but one in four STILL don't know who they will vote for

The polls have opened in the most unpredictable General Election race for a generation as it emerged today that a quarter of voters say they could still change their minds. David Cameron voted with his wife Samantha in Witney this morning, shortly after Ed Miliband and his wife Justine did the same in Doncaster. An exclusive eve-of-election poll for the Daily Mail by ComRes puts the Conservatives just a point ahead of Labour, though David Cameron has extended a huge lead over Ed Miliband as voters' preferred prime minister. Some 52 per cent of voters say they would prefer Mr Cameron to continue in Downing Street, with 31 per cent favouring Mr Miliband.