Dan Onorato (D): 35 (35)
Tom Corbett (R): 48 (45)
Undecided: 17 (20)
(MoE: ±4.1%)
In the other half of the Pennsylvania sample that saw a big drop in Joe Sestak's numbers against Pat Toomey because of PPP's inevitable jump from a registered to likely voter model, the news isn't quite as bad for Dan Onorato... but that's mostly because he wasn't doing very well to begin with. He loses only three points' worth of ground, compared to Sestak's nine. We're getting to the point where we can't blame Onorato's failure to close within single digits on his unknownness, as this sample has about the same number of no-opinions for him (30/28 favorables) as it does for Corbett (33/23); it seems to have more to do with the anti-Dem nature of the year (which seems disproportionately strong in Pennsylvania), as well as the downdraft eminating from Ed Rendell (current approvals of 27/63).
One other point of serious concern for Pennsylvania Democrats: PPP did a generic House ballot test within the state, and it has a 48-39 advantage for the GOP. (That contrasts with a generic House ballot with a 46-40 Democratic advantage in Illinois, also from this week's PPP sample.) With a lot of the state's Democrats concentrated in just a few districts in Philly and Pittsburgh, that points to serious potential trouble for more than just the most vulnerable seats (the open seat in PA-07, Paul Kanjorski in PA-11) to some of the other ones too. While a statewide generic ballot isn't of much more predictive value than a nationwide generic ballot, it certainly suggests that, say, Kathy Dahlkemper and Patrick Murphy need to be at the top of their games this cycle.