A reflective Jeb Bush said he had no regrets Thursday about his failed presidential bid, saying in his first interview since leaving the race that Donald Trump could still lose the nomination fight. "There's a possibility that he won't get 50% on the first ballot," Bush told CNN's Jamie Gangel, giving his first television interview exclusively to CNN after dropping out of the presidential race in February. "And if he doesn't do that, there are a whole lot of people who don't believe he's the proper guy."