Former President Trump continued his romp through the Republican primary, easily winning all but one Super Tuesday contest and demonstrating a dominance so absolute that his stacked victories now seem nearly routine.

SEABROOK, New Hampshire — She stepped over the frozen corpse of the rival campaign and kept sledding along. “Boy,” Nikki Haley exclaimed as the sun set on the coast, and on Florida Gov. Ron DeSantis, “are things changing fast.” Her supporters cheered. Haley barely looked back.