I guess it wasn't that hard to be funny during this campaign, though.
I went to the Letterman show a few times when I lived in NYC and I had the impression he was very weird. That was back in the old studio which was really small, but even in that intimate environment he was all business. No chatting with the audience during commercials, no chatting even with the
guest during commercials. That was so weird to me - during commercials he'd just look at his notes and the guest would just sit there - and then the moment they went back on air it looked like they were best friends again and like they'd been schmoozing during the break. TV is a big fat lie, lol.