Labour's union backers are ready to oust Sir Keir Starmer if the May elections are a disaster, one boss has said. However, he criticised Sir Keir over the decision to block Mr Burnham's bid to fight the Gorton and Denton by-election. It came after the Greater Manchester Mayor said Sir Keir had refused to speak to him ahead of the decision to block him. 'I think it could have created a more positive path for everybody, including the prime minister and the government.' The once-safe Labour seat is now thought to be a three-way marginal between Labour, Reform and the Greens.