What are John McCain's chances in Pennsylvania? Well, in the plus column: Barack Obama lost Pennsylvania to Hillary Clinton in April, and the state's Democratic governor Ed Rendell has worried about cultural conservatives not voting for a black man. The minus column? McCain trails between seven and 14 points according to the polls; Pennsylvania has gone Democratic in the past four presidential elections; and the state has one million more registered Democrats than Republicans, McCain has decided to put his eggs in the Keystone State's basket, and Rendell is sufficiently worried to have recruited Bill Clinton to stump for Obama in the state's western, rural parts. The McCain campaign insists that its internal polls have him within striking distance of victory.