Wandered by the campaign office randomly yesterday, approximately here. Once upon a time it was the kind of place Chris Matthews always talks about - the "neighborhood" where the "guys" are getting upset that things are "changing" - an Italian-American enclave which, while nominally democratic, would often vote Republican especially if racial politics were in play.
It's still that, somewhat, though I haven't noticed McCain signs around at all. I remember seeing Bush signs in the general area in '04. But it's also an area that's indeed changing, with a convergence of Vietnamese and Latino immigrants, along with yet another burgeoning Philly hipster scene (I think we get a new one every 3 weeks or so).
Months ago I worried that PA would be Obama's hardest "Kerry state." Not really worried anymore.