The Labour deputy leadership contest field is growing steadily. Alan 'top-up fees' Johnson has has already declared himself in the running for the number two slot, and is being talked up in some quarters as a potential challenger to Brown for the top job.

Harriet Harman says she may stand, and - as reported below - Peter Hain is definitely up for it. But Ed Balls has ruled himself out.

Still no word on what the left is planning, though. Come on, come on. Surely one of the Campaign Group is willing to make a fool of himself/herself for the good of the cause?