This could be interesting:

It’s been speculated that a big reason so much of the black vote stayed with Hillary thus far is because they didn’t think Obama could win. That fear is dead now, with South Carolina shaping up to be a proving ground.

Meanwhile, Betsy Newmark writes, "This has got to be the death knell for the John Edwards campaign":

He just doesn't have the money to compete at the level that will be necessary from here on out. He's going to fade away as the rest of the primaries progress. And where will his supporters go? I would bet that most of them are not going to go to Hillary.

Related: Another reason why Hillary's campaign advisors might be sweating bullets? The liberal media's love of declaring the primaries a fait accompli, even as they're just getting started.

Brent Bozell writes, "the media’s jackrabbit speed in declaring the race over helps accelerate the whole process and take the old-fashioned patriotic appeal out of primary elections where voters matter."