I know what you're thinking... Ian, you crazy mofo! WTF are you thinking? Well, to tell you the truth, this map is pretty unlikely, but I'll stand by it. The parties will centrist-ize, I do believe, and social issues will be put on the backburner. An election based solely on economic issues, which is what I believe the future of American politics will be and following trends creates this map:
In an election on economic issues, Pennsylvania would vote Republican? Ummm...no.
I don't see any reason Pennsylvania turns Republican, even with a realignment. There are just two many different forces. It may go from a Democratic leaning swing state to a Republican leaning swing state in a realignment, thats all.
Depends on how right wing the GOP gets. Most of the Philly suburbs are left-center to center economically. I'd say PA is a total push in years to come.