<p><br /> Gordon Brown and David Cameron have stepped up their head-to-head election war as campaigning enters what is almost certainly its final six weeks.<br /> </p><p><br /> With the polls still pointing to a hung parliament, the Prime Minister rallied Labour activists with the cry that they were fighting to win.<br /> </p><p><br /> Tory leader Mr Cameron, making a similar address to his own supporters, admitted it would be a "close fight" but one that they had to win for the good of the country.<br /> </p><p><br /> Last week's Budget appears to have made little impression on the state of the parties, with polls suggesting the Tories are still only between five and eight points clear.<br /> </p><p><br /> That is not enough to assure Mr Cameron a Commons majority - and the keys to Number 10 - after the expected May 6 election.<br /> </p><p><br /> Conservative hopes have been bolstered by the News of the World's decision to back the Tories. In its leader column, the paper said the country was "crying out for change".<br /> </p>
