Republican presidential candidate Newt Gingrich is hinging his troubled and indebted campaign on a win in Delaware tonight, telling reporters following him in North Carolina that he “will have something to say this evening once we see some results from today.” Gingrich hit the presumptive nominee, Mitt Romney, for giving a speech titled, “A Better America Begins Tonight,” which a senior Romney adviser said will show Romney in a “new light.” The senior adviser added that the general election campaign has begun. “I think it’s a very substantial mistake for Gov. Romney to be pretending these primaries aren’t occurring and...