the fact that only recently did Dems have 1.2 million MORE registered voters than rethugs, offers some consolation that even before we got to that gap, the state hasn't voted for a rethug President since 1988. I.e., despite the teathuggery that has suddenly appeared here, the rethugs here are more moderate than in typical red states.
This is the state that gave the world Dick Thornburg and Tom Ridge and some who may have suddenly started to talk teabagger-speak, don't reflect a state history of them voting that way. It took Toomey 3 times to get in and he only did so because of the apathetic 2010 turnout. As an example, they threw Santorum out on his ass 6 years ago by the highest percentage of any Senate incumbent in history (18 % points) and right now, Casey (who was the winner of that election then) is leading king teabagger Smith by almost 20%!!!
http://www.politicspa.com/inquirer-poll-casey-53-smith-34/40388/
Add to this something I just found today from last Friday, where Corbett's favorability is in the pits (52% disapprove) due to the Sandusky thing, and I think the PA rethug electorate is thinking of other things beyond the national level. I.e., surprisingly (at least to me), that Penn State thing is a throbbing mess for people in Pennsyltucky and they are starting to blame the governor for his lack of action back when he was the AG.
An interesting analysis that I need to really read - http://articles.philly.com/2012-08-28/news/33426039_1_corbett-spokesman-kevin-harley-undecided-voters-pennsylvania-voters