GOP are most likely NOT taking the House with that setup. And PA-12 as Tilt Republican is rather amusing.
It's not like it voted for McCain and demographically is Republican or anything
Yes, it voted for McCain, the only Republican presidential candidate it has voted for since 1972, and one of the few Republicans it has voted for at all for that time. Even Santorum's weak opponent in 2000 probably won it.
Demographically it is not Republican, quite far from it actually.
Its been shifting Republican so, 10 yrs ago, that seems rather obvious. It was more Dem then the state at-large, now it is more Republican then the State at-large.