The UK Independence Party remains on course to top the poll in the European elections while the Liberal Democrats face a humiliating fifth place finish behind the Greens, according to a new opinion poll.
The ComRes survey for The Independent on Sunday and the Sunday Mirror puts Ukip out in front with 35% - one point up on last week - among those "absolutely certain" to vote on Thursday in the election to the Strasbourg Parliament.
Labour are unchanged in second place on 24% while support for the Conservatives in third is down two points to 20%. The Greens meanwhile are up two points on 7%, leapfrogging the Lib Dems who slumped to just 6% with another two point drop.
In voting intentions for the general election, Labour has seen its lead over the Tories cut to four points, with support for Ed Miliband's party down two points on last month to 33% while the Conservatives are unchanged on 29%.
Nevertheless Labour strategists will be relieved that it shows the party still ahead after an ICM poll for The Guardian put the Tories in the lead for the first time in two years.
Ukip are in third with 19% - down one point on the month - while the Lib Dems trail in fourth with 8%, a gain of one point.
:: ComRes interviewed 2,045 GB adults online on May 14 and 15.
In contrast, an ICM poll for The Sunday Telegraph, showed Ukip slipping to third place behind the Conservatives in the European election.
The survey has Labour is in first place on 29%, down one point on last month, while the Tories are up four points to 26% and Ukip has dropped two points to 25%. The Liberal Democrats are on 7%.
ICM's separate Wisdom Index poll - charting voting intentions in the general election - has the Conservatives on 31.4%, marginally ahead of Labour on 30.7%.
:: ICM Research interviewed an online sample of 2,033 adults aged 18 and over on May 14 and 15.