The Conservatives have fallen to their lowest poll rating since April 2006, with support for the party down 10 per cent.
The ComRes/Independent poll put support for the Tories at 30 per cent, 8 points ahead of Labour who are up one on 22 per cent. Until now David Cameron's party had not fallen below 39 per cent this year. The Liberal Democrats are unchanged on 18 per cent.
The poll continued to show smaller parties winning support at the main parties expense. Ahead of Thursday's local and European elections, the Green Party are on 8 per cent, with the UK Independence Party on 7 per cent and the British National Party on 3 per cent.