The most important political consequence of the leak of the Project Volvo documents is that it reminds everyone in the Labour party of what a divisive figure Ed Balls is. Ever since the leadership contest, where his reputation as a plotter crippled his candidacy, Balls has been trying to soften his image. He has sought to present himself as a more collegiate figure. But this leak is a reminder of how Balls used to operate and why some people in the Labour party will do everything they can to prevent him from becoming leader.
We now wait to see what emerges about how these documents made their way into the public domain and whether retaliation follows. For the other Ed the challenge is to find a way to move Labour beyond the factionalism of the past.