In the first skirmishes, Republicans continued with "socialist"/"government tyranny" blanket opposition, and the Dems went with "Republicans in the pockets of big business and the rich."
It looks like the Dems won.
(You would really have to be a political fool to try and stand with the financial companies right now.)
The Republicans next attack appears to be to try to imply corruption by highlighting Goldman Sachs contributions to Democrats. (However, wouldn't the fact that the Dems are prosecuting Goldman undermine that argument?)
One more PS. How do the Republicans lose fundraising on Wall Street? That should be their sweet spot. Part of it is certainly Democrats in power, but I think part of it is also that they've become the party of Sarah Palin, not Reagan or Bush Sr.