The Tories could be on track for victory in the Eastleigh by-election, according to a new poll.
Research by Survation, for the Mail on Sunday, put the Conservatives on 33% - four points ahead of the Liberal Democrats.
The figures reverse recent findings that suggested Nick Clegg's party would narrowly retain the seat vacated by disgraced former Cabinet minister Chris Huhne.
However, the advantages are within the pollsters' margin for error - suggesting with less than a week left the contest will be very close.
Conservative - Maria Hutchings
Labour - John O'Farrell
Liberal Democrats - Mike Thornton
UK Independence Party - Diane James
National Health Action - Iain MacLennan
Peace Party - Jim Duggan
Independent - Danny Stupple
English Democrats - Mike Walters
Monster Raving Loony Party - Alan Hope
Wessex Regionalists - Colin Bex
Elvis Loves Pets - David Bishop
The Beer, Baccy and Crumpet Party - Ray Hall
Christian Party - Kevin Milburn
Trade Unionists and Socialists - Daz Procter