Honestly, I can see Obama getting a bump in the immediate aftermath of the credit fiasco. Bush is in charge when it blows up, "the gov't bailing out Wall Street fat cats" sticks to the GOP better than the Demos, and times of financial uncertainty/failure drive folks to cry "Uncle Sam, help me out!".
BUT the truth will eventually find its way out, and the people will see the fingerprints of the Democrats all over it. I sure as hell hope so... It'd be a damned shame if they don't.