<p><br /> Liberal Democrat leader Nick Clegg has mounted an ambitious raid on Labour's northern heartlands.<br /> </p><p><br /> Mr Clegg took his campaign to three of the Lib Dems' Labour-held target seats - Burnley, Colne Valley, and Redcar, where they would need to overturn a 12,000 majority. In a pitch to Labour voters, he accused the party of having "betrayed" its natural supporters during its 13 years in office.<br /> </p><p><br /> With just four days to polling, the three main party leaders were all engaged in a frenetic day of campaigning as they began the final push for votes in an election where the outcome remains highly uncertain.<br /> </p><p><br /> Gordon Brown was concentrating his fire on the Tories - denouncing their manifesto as a "horror show".<br /> </p><p><br /> His attack was echoed by Northern Ireland Secretary Shaun Woodward, who said the country was in danger of "sleepwalking into a living nightmare - that nightmare is David Cameron's divided Britain".<br /> </p><p><br /> Tory leader David Cameron acknowledged that the Conservatives would have to go further in cutting public spending than they had so far admitted in order to tackle Britain's record £163 billion deficit. But he insisted that he would ensure that the most vulnerable in society were protected.<br /> </p>
