Sir Keir Starmer is “increasingly unlikely” to lead Labour at the next general election, a campaign group backed by Andy Burnham has said. Mainstream, a soft-Left pressure group, blamed the party’s dire local election results on a “failed political experiment at the top of the Labour Party that has put control, centralisation, and factional advantage before the founding principles of our movement”. The group demanded “an orderly transition and a genuinely open, democratic debate about both who