The Republican National Committee (RNC) has set the highest threshold yet for the fourth GOP presidential primary debate, with only four candidates meeting the qualifications. Former New Jersey Gov. Chris Christie, Florida Gov. Ron DeSantis, Former Ambassador to the U.N. Nikki Haley, and businessman Vivek Ramaswamy will take the stage Wednesday night at the University of Alabama in Tuscaloosa. The debate will be hosted by Fox News and moderated by Bret Baier, Martha MacCallum, and Bill Hemmer.