EMAILS AT ISSUE

Trump also went on the attack against Clinton over her private email server, saying: "You ought to be ashamed of yourself."

Clinton said, "You know it's just awfully good that someone with the temperament of Donald Trump is not in charge of the law in this country." Trump shot back: "Because you'd be in jail."

A nearly year-long FBI investigation into the emails concluded earlier this year without charges being filed, although FBI Director James Comey said Clinton had been careless in her handling of sensitive material.

Clinton insisted there was "no evidence" that her server had been hacked and that any classified information had ended up in the wrong hands. "I take classified material very seriously," she said.

Trump said: "You said it was fine to delete 33,000 emails. I don't think so."

Clinton shook her head. "Look it's just not true."

She accused Trump of dodging a discussion of policy issues to avoid talking about his campaign because of "the way yours is exploding and Republicans are leaving you."