They’ll still have that, but in districts where people are actually watching, a drop in the Black vote will have significant ramifications for Democrats.
It depends on how "aggrieved" they'd be were their messiah jettisoned.
I suppose they might just sit out 2012. The reality remains - the Dem Party is just an extension of the Master's Plantation. 7% get it and vote GOP, and the other 93% swin like a school of sardines.