Others are more circumspect. Margaret Hodge, scourge of the tax avoiders, could be a candidate, but as self-identified members of the Blairite wing of the party, she, Jowell and Andrew Adonis could risk splitting that vote. Shadow London minister Sadiq Khan is keeping his head down, but no-one doubts why he wanted that campaign-intensive, London-centric role in the first place. Diane Abbott has all important name-recognition but her maverick nature can sometimes leave her looking ill-disciplined. A recent addition to the rumoured candidates is Dagenham MP Jon Cruddas: one senior union source calls him “a serious big-hitter with a big vision”. And Doreen Lawrence has been floated as a potential candidate, though her friendship with Khan means she’d be unlikely to run if he did.