A question for Pierson: Why has Trump tended to retreat from his all-networks media-exposure strategy of the primary months to a more Fox News-centric approach? As CNN’s Brian Stelter reported last week , “Trump is saying ‘yes’ to Fox News almost every day but saying ‘no’ to most other major networks and news organizations — a highly unusual strategy for a presidential nominee.”

Pierson denies this retreat. “What you’ve seen is a very hectic rally schedule. When he’s doing rallies — two or three a day — in multiple states, there’s really no time to do TV.” But didn’t he do many rallies in the primaries? “No, it’s much more now, because he’s going into other locations as well. He’s having coalition meetings.” So why wouldn’t he mix up the outlets when he does have time for interviews? Why Fox News instead of others? “Oh, I’m sure he would, if the schedule allowed. Mr. Trump loves doing media. He’s a media guy; everybody knows that. I don’t think it’s really fair to criticize him for media at this point, considering how he’s been the most available candidate ever.”