Donald Trump brought a surprise to Thursday night's debate—an endorsement from former presidential rival Ben Carson. The New York billionaire was asked by moderator Jake Tapper what his specific issues were with Common Core when he pivoted to his endorsement. “I was with Dr. Carson today, who’s endorsing me by the way tomorrow morning, and we spoke for over an hour on education,” Trump said. “He wants a lot of different things that are terrific.” “I’m gonna have Ben very much involved with education,” Trump said.