There is a new ICM poll in the Guardian showing Labour stretching their lead over the Conservatives to 4%:
Conservative 35% (down 2%)
Labour 39% (up 1%)
Lib Dem 13% (down 1%)
This poll is now broadly in line with YouGov following revisions to their methodology
ICM Research interviewed a random sample of 1,003 adults aged 18 and above by telephone on 21-23 October 2011.