Comparisons are with the most recent YouGov survey for the Sun earlier this month, which gave the Tories a 7% lead.
YouGov interviewed 2,077 adults online, across Britain, on Thursday and Friday.
7.45pm Update: ComRes also has a poll out tomorrow
Sunday Update: The detailed breakdown of the poll is now online and several readers have pointed out the interesting figures for Scotland – namely Others (mainly SNP) on 30% with the Conservatives and Labour level pegging on 28%, which is considerably higher than the Tories have been doing in Scotland for some years. There is the obvious health warning, though, that on its own it is a small sample, ie a couple of hundred people.