Trump bucked his own party during the debate, backing a plan promoted by Hillary Clinton.
"If I were Donald Trump, I wouldn't participate in another debate."
The clash produced unusual moments that will have the political world buzzing for days.
Melanie Zanona 09/27/16 12:38 AM EDT
There were a handful of notable and heated exchanges after a reserved start.
Trump claimed his microphone wasn't "working properly" and asked if it was "on purpose?"
Alicia Machado says Trump called her "Miss Piggy" and "Miss Housekeeping."
Third-party candidates weren't invited to participate in Monday night's debate.
For much of the evening, Holt was the invisible moderator.
He noted there were no questions on Clinton's emails, the Clinton Foundation or Benghazi.
The comedian did not find the event funny.