A training school English class, if you combined everyone in the freakin' building, wouldn't even begin to approach any one of the monumental egos on that stage. You think there has been a presidential debate ever where even one of the participants wasn't saying "rules? pffft...moderators? pffft, and pfffft again." You could bring in a guy who could moderate a half dozen English class debates plus the Mayoral campaign debate in a small town all at the same time and those people would still just bull him over. They are vying for the most powerful office on the planet and they aren't going to skip a beat for some moderator.