A defiant Keir Starmer is clinging to power despite four ministers quitting his government and more than 90 Labour MPs calling for him to go over Labour’s election drubbing. Without a direct challenger, the prime minister called on his would-be rivals to put up or shut up. Confronting cabinet members for the first time since last week’s disastrous local election results, he made it clear someone would need to challenge him if they want him removed. A separate group of more than 100 MPs signed a letter backing him, urging the party to work together “to deliver the change the country needs” and warning: “This is no time for a leadership contest.” Sir Keir plans to plough ahead with Wednesday’s King’s Speech and the State Opening of Parliament, and a pledge to “deliver on the promise of change”.…