The PA seats generally considered most competitive for the GOP to win are PA-10 (Carney), PA-11 (Kanjorski), PA-7(Sestak), PA-4 (Altmire) and PA-8 (P. Murphy).
Charlie Cook considers PA-3 (English), PA-6 (Gerlach), PA-15 (Dent), and PA-18 (Murphy) as possible - but not very likely - Dem pick-ups of Pubbie seats.
I include PA-12 as a very real dark-horse opportunity for the GOP.
PA-10 is a district that went for Bush in 2004 with 60%. At this time GOP challenger
Chris Hackett is very slightly ahead of Dem Rep. Carney with cash on hand. However, Carney has no debt while the Pubbie has run up a debt of right at one million bucks. Both guys have raised $2.2M and spent $1.8M. The million dollar debt was a candidate loan, so I'm guessing the GOPer Hackett likes his chances. Any PA folks that can weigh in on this race??