Brown needs to stand up today and announce that Mendelson has gone. But here's what puzzles me. Did he demand absolute candour from Mendelson? As chancellor, Brown kept a distance from fundraising knowing it to be a dirty business. As Labour party leader, his main job would be paying a stream of creditors. It seems remarkable that this financial pedant didn't want to know how his own party was dealing with this issue.
I can't think of a scandal that has unfolded so quickly and dramatically. It is well suited to blogs, this morning's newspapers already seem dated. We'll do our bit to keep you up to date here at Coffee House.