Labour has established a 14-point lead over the Conservatives, according to a poll.
Support for Labour is on 45%, while that for the Tories is on 31%, the YouGov survey for The Sun suggested.
The Liberal Democrats are on just 7%, in fourth place behind the UK Independence Party on 8%, YouGov found.
The poll also discovered that Labour has crept ahead of the Tories as voters' preferred choice for dealing with the problems facing the economy.
The Tories' one-point lead on its handling of the economy has been reversed since two weeks ago so that Labour is now backed on the issue by 27% to 26%.
:: YouGov interviewed 1,720 adults on May 13 and 14.
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