“It's a comms problem” is the diagnosis politicians, pundits and the public often reach for whenever a prime minister flounders. It was arguably Keir Starmer’s biggest undoing. From the beginning, he failed to articulate what kind of prime minister he would be. In the end, nobody really knew what he thought about anything. For today’s guest Lee Cain, Starmer was a “political vacuum” – but he believes his successor Andy Burnham is ripe with rheto…