E.J. Dionne has a column out in today's Post on the potential damage that Bill Clinton's two weeks of knockabout campaigning has done to Hillary's campaign. I think he gets it just right. A lot of this isn't about Obama. There's a good argument I think that Bill helped Hillary a lot in Nevada and New Hampshire. (E.J. suggests Bill wasn't a big factor in NH; but my recollection is that that is when his aggressive push started.) But I think it's at a cost that is probably much greater than people realize even now.