I'd have thought Delaware county (with Chester) to be the most worrisome. RR may not carry Montco, but it'll be very close. Until the last couple of weeks, I was certain RR was going to carry my county because there was virtually NO visible support for 0 here in Montco. I am in between Philadelphia and Norristown. Philly has a very unenthused African American population so the turnout won't be anything like 2008. Drive through Norristown and you wouldn't even know there was an election coming so I'd say their turnout is going to be way down.
Do you know where I can find the numbers for the specific areas for the 2008 election? I'm specifically interested in Conshohocken, Jenkintown, and Lower Merion
I would think Chester city is less enthusiastic than Philadelphia. I grew up in Delaware county, but I have not lived there for 30 years, so I may be incorrect. It used to be Republicans could count on folks living west of the railroad tracks. ( Memory is failing me, the R3 line ... The train that runs from Wilmington to Suburban station.)