Donald J. Trump defeated Nikki Haley in the New Hampshire primary election on Tuesday‚ continuing his momentum toward the Republican nomination and raising fresh questions about her viability going forward. Mr. Trump’s victory‚ called by The Associated Press just as final polls closed at 8 p.m. Eastern‚ means that he has‚ in consecutive weeks‚ outpaced Ron DeSantis in Iowa and Ms. Haley in New Hampshire‚ the two states where they had campaigned and spent most aggressively. No Republican...