Donald Trump received applause from the audience, which was banned by the debate commissioners, after he brought up Hillary Clinton's email controversy. NBC's Lester Holt, the moderator, stopped Trump to "admonish" the audience for applauding him for raising her private email scandal.



Trump challenged Clinton to release her deleted emails:





DONALD TRUMP: I will say this. We have a situation in this country that has to be taken care of. I will release my tax returns, against my lawyer's wishes, when she releases her 33,000 e-mails that have been deleted. As soon as she releases them, I will release my tax returns and that's against my lawyers say don't do it. I will say this. In fact, watching shows to reading the papers, almost every lawyer says you don't release your returns until the audit is complete. When the audit's complete, I'll do it. But I would go against them if --



LESTER HOLT: So it's negotiable?



DONALD TRUMP: It's not negotiable, no. Why did she delete 33,000 --



LESTER HOLT: I'll let her answer that. Let me admonish the audience one more time. There was an agreement. We asked you to be silent. It would be helpful for us.