I live in PA, and we actually know people that love Hillary. If Obama doesn't bring up her past, he's done. The clintons will literally claw their way back in the White House. He seems diminished after tonight. IMO...
Oh, I think he'll bring it up. He'll start asking about her tax returns...and he'll emphasize that she need to release more than just THIS year's returns.
If McCain's watching, this will open a perfect opportunity for him. He should point out repeatedly that the Clinton's brag about their lifetimes of public service....but they became filty rich at the same time! It's the perfect theme for this year's electorate, which obviously despises the hand-in-the-cookie-jar politicians.
(Of course, McCain is above doing this himself. He'll have to let his surrogates do it.)