CLEVELAND—A combative Donald Trump, the billionaire businessman-turned-presidential candidate, jolted the first Republican debate of the 2016 campaign by warning he might run as an independent if denied the GOP nomination. His startling declaration left his onstage rivals scrambling to compete for attention the rest of the night.
Asked in the debate’s opening minutes whether he could rule out a third-party run, Trump declared Thursday night, “I will not make the pledge at this time.” He also refused to apologize for making crude comments about women, defended his changing policy positions and tangled with the debate moderators.