Broad context: PA outside of Philly County has been trending red for 20 years. It has so far been checked by Dem turnout in Philly County, but Philly County’s population has been flat. So turnout increases in the county are from turnout machines/enthusiasm alone. At some point, that could breakdown. …

Obama MUST net 433k votes out of Philly County to win. In 2008 he netted 478k votes. In 2004 Kerry netted 410k votes. In 2000 Gore netted 350k votes.