Trump- in 1957
Andy Griffith describes his role in the 1957 movie 'A Face in the Crowd':
https://www.youtube.com/watch?v=Z_m3vdPLQ68
Some highlights of the movie:
https://www.youtube.com/watch?v=-zzCQLyNnIg
The difference is, if Trump were revealed by having his real contempt for his followers made public I doubt it would lose him more than a few percentage points... The majority of his followers would just shrug and say "At least he says what he really thinks!"