Donald Trump Says He Has One of the 'Best Temperaments' of Any Presidential Candidates Trump made the remarks in Colorado.

 -- Republican nominee Donald Trump says that he's refusing to play "nice guy" anymore.

As chants of "Lock her up" rang out at his rally in Colorado Springs — a rallying cry against Hillary Clinton — Trump seemed to agree with them.

"You know what? I’ve been saying — I’ve been saying let’s just beat her on Nov. 8, but you know what? No, no, you know what? I’m starting to agree with you," he said, a departure from the demurral he usually gives when the chants break out.

"I’ve been nice, but after watching that performance last night, such lies," he said. "I don’t have to be so nice anymore. I’m taking the gloves off, right, yes? Take the gloves off ... Just remember this, Trump is going to be no more Mr. nice guy. Tell Hillary I am not gonna be nice anymore."

Trump, who has given his Democratic rival the moniker "crooked Hillary" and attacked her on multiple fronts, also told supporters Friday that he has "one of the best temperaments" of any previous presidential candidate.

"I think I have the best temperament or certainly one of the best temperaments of anybody that’s ever run for the office of president. Ever," he told the crowd today. "Because I have a winning temperament. I know how to win."

Trump's critic have repeatedly assailed his temperament in light of his controversial remarks, with his Democratic rival saying at the Democratic convention, "A man you can bait with a tweet is not a man you can trust with nuclear weapons."

He suggested that the television ratings for his final speech at the Republican convention were more important than public opinion polls he often touts.

"Oh, and by the way, so the Nielsen ratings just came out. These are for television, much more important than polls," he said. Trump had 34.9 million viewers, versus Clinton's 33.3 million viewers.