YouGov/Sun - 40/39/12
YouGov's daily poll for the Sun tonight has topline figures of CON 40%, LAB 39%, LDEM 12%. It's the lowest lead YouGov have shown since the election (and, indeed, since the election-that-never-was), although ICM have already shown the two parties neck and neck.
We have been seeing the gap between Labour and the Conservatives gradually narrowing over the summer. We are rapidly heading towards the conference system, which looking at past elections has normally produced a lot of up and down in the polls as each party gets some sort of boost from the media coverage of their own conference - I'd be surprised if we didn't get a poll showing Labour ahead during their conference if we don't get one this week.