Amid reports of the John McCain camp narrowing the number of states in which it is truly competing, all eyes in the political world have turned toward Pennsylvania (in part because that's where the candidate spent his day hard at it on the stump).

With polls showing Barack Obama poised to win at least four states President Bush carried in 2004 -- Iowa, New Mexico, Virginia and Colorado -- the question has become which major state could McCain snatch from the Democratic column to m