CHARLESTON, S.C.—Before he handed candidate Nikki Haley a double-whammy defeat, breaking two records in her home state on Saturday, former President Donald Trump seemed to be backing away from criticizing his challenger.
President Trump made little or no mention of Ms. Haley, his former United Nations ambassador, in at least three high-profile recent speeches—a strategy that would be smart to maintain at this stage of the game, a political science professor says.