I'm in Philadelphia, scene of the Rocky, the 1976 film, where the small-time street fighter Rocky Balboa survives 15 rounds with the undefeated World heavyweight champion Apollo Creed. As they go to the polls in Pennsylvania in what seems like the 15th round of a bruising world title fight, everyone wants to know is whether Hillary has finally found Obama's glass jaw and is about to knock him out of the race. A split decision means big trouble for her, given the high expectations that she was going to win Pennsylvania by more than 10 percentage points.