Burnham's victory in Makerfield has shown he can beat Reformpublished at 14:28 BST
Nick Eardley and Henry Zeffman
Political correspondent and chief political correspondent
Image source, EPALabour MPs argue the problem isn't necessarily the party, it's the man at the top. They believe the prime minister is personally unpopular - and that it is Sir Keir Starmer who is holding his party back.
The result of the Makerfield by-election looks set to be the straw that breaks the camel's back.
Andy Burnham's victory wasn't even close - he beat Reform comfortably. For Labour MPs despairing about how they take the fight to Nigel Farage's party, they now have a leadership contender who can argue he has a track record of doing exactly that.
Dozens of MPs had already said Starmer should quit. That list has grown since Thursday, with senior cabinet ministers adding their voices privately.
The fact that it is known that ministers including Foreign Secretary Yvette Cooper, Home Secretary Shabana Mahmood and Transport Secretary Heidi Alexander have told the prime minister to go and yet they remain in their jobs speaks volumes about how Starmer's authority has collapsed.
Burnham is now the overwhelming favourite to be the UK's next prime minister.
If Starmer does resign in the coming days, the next question is whether there is any contest at all.
Wes Streeting, the former health secretary, always said he would stand. But his allies are now saying there should be conversations between candidates for No 10 about what the future looks like.
There are some hints a deal could be struck (even if Team Streeting are saying for now that their position hasn't changed).
















