John McCain's team has unleashed another ad showing Hillary Clinton attacking Barack Obama and praising McCain. In this one, they even go so far as to use the opening scene of Clinton's "3 a.m." ad from the primary cycle. Hillary was quoted yesterday as saying she absolutely 100% does not approve this message. And both the Obama and Clinton camps are -- on the record -- categorically denying there is any tension here. Heck, Michelle and Hillary are scheduled to show up at an event together today. But this sort of thing has to make for some awkward moments. What it's probably not going to do is convince any swing voters. Right now, though, the game is about screwing up the other side's convention and staying in the news cycle.