First post Conservative Conference Poll
Since the YouGov poll I thought might have surfaced yesterday didn't, the first post-Conservative conference poll is in fact from from ICM in the Guardian, conducted on Wednesday and Thursday (presumably the fieldwork began after Cameron's speech, though the Guardian are not specific about it).
The topline figures, with changes from ICM's poll a week ago, are CON 42%(+1), LAB 30%(-2), LDEM 17%(-1). There is obviously no significant boost in the Conservative score here from their rather overshadowed conference, but their lead in ICM's poll has moved back up into double figures as Labour's own conference boost subsides.
ICM also found that 55% of people thought that Gordon Brown was handling the present economic situation well, compared to 39% saying he has performed badly. This does suggest he is coming out of the present crisis well, though not well enough to actually lead in economic preferences - Cameron and Osborne still narrowly lead Brown and Darling as the best team, 37% to 35%.