PA is much like MA, everywhere is Republican except the cities.
... and the near suburbs. I live in Motgomery Cty, PA — a formerly rock-ribbed republican suburb of Philly. No more. The reason Arlen Spector lasted so long was because he knew where the votes were (and how to get them). The reason he drove everybody nuts was because he reflected the schizophrenic politics in this area. Politics that were increasingly democrat.