Well, McCain sponsored and Bush signed McCain-Feingold. Second, Citizens United isn't about campaign finance per se. Since the people spending money under CU can't even talk to the campaign they support, this category of spending is at least a layer removed from the candidate, and quid-pro-quo becomes more difficult.

But finally, and my most important point: No, Republicans, to the extend they have a common position doesn't want campaign finance reform. But neither does the democrats (to the extend they have a common position). Most significantly, a very prominent Democrat broke his pledge to take public financing in the face of raising heaps of money and outspend his opponent 2:1.

I mean, perfectly honest, Democratic congress or not, is Obama going to get behind serious campaign finance reform?