Miliband unveils big and expensive changes for Labour
This whole business of opting members in as opposed to automatically enrolling them in the Labour party is a big change. It could cost Ed Miliband dear financially as estimates suggest it may cost Labour between £3-5 million.
To put it into context, it is reforms former Prime Minister Tony Blair wanted to do but couldn't and Mr Blair has been praising the current Labour leader for doing so today.
It allows this passive group of Labour members to allow unions to wield a lot of power. Yes, that is significant.
But as the Tory sources have been pointing out, perhaps with some justification, Miliband didn't really address what happened in Falkirk.
He didn't really say what he is going to do about it or other seats around the country where it is claimed Unite are involved. I think that part of it still needs to be addressed.
I'm sure Labour will conclude today that a big public row with the unions is no bad thing for voters.