Toby Helm has poured cold water on the idea on the grounds that Cruddas and Purnell are too ideologically different to run together. But to win the Labour leadership, people are going to have to form alliances across the divides in the party: no bloc is strong enough to deliver the leadership on its own.
I suspect we’ll see ‘dream tickets’ forming, there will be a deputy leadership contest as well if Harman runs, which are designed to broaden the candidates support beyond their natural constituency. In these, personal chemistry is going to matter and Cruddas and Purnell do get on well. Tellingly, Cruddas heaped praise on Purnell at a think tank event yesterday describing him as the best civic republican in British politics.