“And I’m not in favor of that. It’s not something that I relish or take lightly. I’m just telling you that could very well be the option we wind up with at the end,” he said.

The Associated Press stands by its photo.

Florida Sen. Marco Rubio is going to announce Wednesday he will run for re-election, reversing his prior pledge that he would not try to return to the Senate if he lost his bid for the Republican presidential nomination.

Marco Rubio talks about Donald Trump on Thursday.

Ben Carson inadvertently revealed who was on Donald Trump's list of possible running mates on Sunday in an interview with The Washington Post.

But Rubio stopped short of offering Trump his clear backing.