This is apparently Philly districts. Check out this tweet:
@StefanoSpeaks:Romney is going 2 win PA!returns show Northampton Co is going Romney since WWII, Lehigh Co hv predicted how PA goes 4 Prez
http://www.lehighcounty.org/Departments/VoterRegistration/ElectionResults/tabid/445/Default.aspx
So far Lehigh County going for Obama - not sure which districts, but the county includes urban/poor Allentown & Bethlehem.