This is, to put it mildly, rather off message and Unite have rushed out a statement this morning saying that Brown has Simpson’s “full support” and is the “only choice” to lead Labour into the election. But it doesn’t deny what Simpson said. Following on from Cruddas’s intervention earlier in the week, it does seem further evidence that the soft left is increasingly open to a change in leadership. The question is whether they have they left it too late.
It is also worth noting that Simpson backs Ed Miliband as a possible future leader. Ed Miliband is rapidly emerging as the lowest common denominator choice, he’s acceptable to pretty much all the wings of the party. But it is hard to imagine him standing against his brother in any leadership contest.