A local radio host in Madison who also has a show broadcasting in Milwaukee refers to the fleeing dems as Fleebaggers. I think Fleabagger fits better though. I suppose either works and both describe the dems well. The former reminds one of cowards and latter, parasites.
Fleebaggers sounds pretty good, actually. It also implies cowardice and parasites, not to mention striking a contrast with tea partiers who actually aren't afraid to challenge opponents. That's up there with "proglodytes".