Tessa Jowell is the current bookmakers’ favourite to be the Labour candidate in next year’s London mayoral election. If the odds are to be believed, Sadiq Khan is the only other person who stands a chance. Diane Abbott, the candidate most likely to benefit from the recent surge in Labour Party membership and support for Jeremy Corbyn, is well behind at 25-1. The Hackney MP shouldn’t be written off just yet – Corbyn was once a 100-1 shot for the party leadership – but the chances of a second bushwhack by the Labour left seem remote.