And, somehow, it all comes down to Delaware:

A source close to the Gingrich campaign tells National Review Online that the former House speaker will leave the GOP presidential primary if he does not “win or come in a close second in Delaware,” which holds its primary today. “A big loss in Delaware would cause Newt and the campaign to reassess,” the source says. “We need momentum in order to survive and compete in the May primaries.

This is as good a place as any to officially announce that we will not be live-Slogging the primaries tonight. Even if Gingrich were to win Delaware—which I doubt, but I suppose it could happen—nothing would change. If there's any news at all about the primary, I'll be sure to post it here on Slog, but Romney winning all the states in tonight's Republican primary is the opposite of news.