Conservative lead back up to 10 points in latest ComRes poll.
David Cameron's performance in the final leaders' debate fails to boost Conservative support.
Labour unchanged on 27 per cent in latest YouGov poll.
Lib Dems up three points to 31 per cent in latest YouGov poll.
Support for David Cameron's party rises four points to 36 per cent in latest Populus poll.
Latest ComRes poll puts Tories down two to 32 per cent, just a point ahead of the Lib Dems.
Latest YouGov poll suggests a hung parliament remains the most likely outcome of the election.
Latest polls put Lib Dems ahead of Labour and show little decline in support.
New YouGov poll suggests press attacks have not damaged Clegg as Lib Dem support rises to 29 per cen