This story has been updated.

MANCHESTER, N.H. -- Donald Trump expects the first Democratic debate on Tuesday night to be so boring that viewers will quickly change the channel or fall asleep -- so he's planning to make it a bit more exciting by adding his own commentary.

Trump -- the insult-throwing, colorful-language-using, Twitter-obsessed Republican presidential frontrunner -- announced early Tuesday morning that he will live-tweet the Democratic debate:

Millions of people watched the first two Republican debates, and Trump has taken credit for dramatically boosting viewership. His debate style is unlike that of most presidential candidates, and he's not afraid to crack jokes during serious questions, mock his opponents' appearances and speak in the third-person. In both debates, he dominated the time clock, speaking for far longer than anyone else on stage. Trump warned on Monday that the Democratic debate will likely be far less engaging and entertaining.

"I think it's not going to be very well rated, because Trump isn't in the debate," Trump told reporters on Monday at a bipartisan political convention in Manchester, N.H. He quickly added: "I'm only kidding... You're going to watch it for 10 or 15 minutes, people are going to get bored and turn it off."

Update, 12:43 p.m.: The Clinton campaign reacts.