Difficult call this one. Evidence is leading all over the place in both nasty little contests. Hillary's ahead of Obama in the Nevada opinion polls, but New Hampshire proved poll leads meaningless, and the endorsements Obama's picked up (and the lawsuit he won) could (in this contest for sure) easily negate her advantage. In South Carolina will McCain revenge himself on what was done to him in 2000? Will Romney retain a 'bounce'? Will Huckabee have a constituency?
My call is Clinton/McCain again. If it happens, then I do expect the tone to collapse further than it already has in the last week.