Brown sees G20 poll boost evaporate

LONDON (Reuters) - Prime Minister Gordon Brown's boost from last week's London G20 summit has already evaporated, according to an opinion poll on Monday that said the Conservatives were on course for an election win.

The Populus survey for the Times said the Conservatives had stretched their lead over the Labour government by one point to 13 percentage points over the past month.

The findings contrasted with a Sunday Times poll at the weekend which showed Brown had cut the Conservative lead to seven points in an apparent public vote of confidence after the $1.1 trillion (745 billion pound) economic stimulus agreed by G20 leaders.

However, a quarter of respondents to the Populus poll said they felt more positively towards Brown because of the way he chaired the summit, with 11 percent feeling less positive and 62 percent saying it had made no difference.

The Populus survey forecast that the Conservatives would take 43 percent of the vote, up one percentage point from last month, with Labour unchanged on 30 percent and the Liberal Democrats down one point on 18 percent.

Populus interviewed 1,512 adults by telephone between April 3 and 6.

Brown does not have to call an election until mid-2010.

(Reporting by Tim Castle)