Time, it seems, is running out for Sir Keir Starmer. A prime minister can survive bad polls, bitter briefings and bruising by-elections. He cannot survive when his own side stops believing he can lead them through the next storm. Business Secretary Peter Kyle’s admission that it would be “delusional” to deny the forces moving against him said what Downing Street could not. The authority has weakened. The question now is whether Sir Keir leaves in a manner of his choosing or is dragged into a