Explaining the continued popularity of Trump in the GOP Primary

"We're really in uncharted territory - to have an outsider candidate who, one might say, peaked too early. But his peaks don't seem to disappear; he has little valleys and then he peaks again based upon the latest controversial remarks that he makes. And whether people like it or not, the field is still very much, in these debates and as we look at the entire context of the Republican Primary, Trump against everyone else. None of the other candidates has managed to face him head on and create a dynamic where it's Trump and a another main contender."