IIRC at one time, I thought Letterman said he was a Republican. Maybe more of a “Bush” Republican.
His fawning over dim pols belies that.
When he gave up “The Worlds Most Dangerous Band” title when switching networks he lost me. I tried still watching but the tailspin had begun. The last decade he was on he was nothing but an embarrassment. He’s nothing more than an amoral rich dreg on society and will probably live a very long time.