Gordon Brown is regarded as a worse prime minister than Tony Blair by nearly a third of voters, according to a poll.

The Populus survey also shows the Tories' lead over Labour growing by three percentage points in the last month.

It found that support for the Conservatives has risen two points to 39 per cent, while Labour has fallen one to 33 per cent.

The Liberal Democrats are down two on 17 per cent.

Populus found that 31 per cent of the public feels the Prime Minister is worse than his predecessor, Mr Blair.

© Independent Television News Limited 2009. All rights reserved.