The Best Lines From the 2016 Democratic Presidential Debate

— -- The Democratic debate included the introduction of some of the candidates to a national audience, fiery exchanges and some tough questions.

The five candidates on stage -- Hillary Clinton, Bernie Sanders, Martin O'Malley, Jim Webb and Lincoln Chafee -- duked it out on the debate stage tonight in Las Vegas, Nevada.

Here are some of the best lines from tonight's debate:

"...the American people are sick and tired of hearing about your damn e-mails." -- Bernie Sanders on the Hillary Clinton email controversy.

It was inevitable that Clinton would get a question about her private email server.

Clinton answered the question but insisted that she didn't want to talk about her emails.

That's when Sanders chimed in: "Let me say something that may not be great politics, but I think the secretary is right. And that is that the American people are sick and tired of hearing about your damn e-mails."

Sanders' comments got applause from the audience and Clinton thanked him with a handshake.

CNN debate moderator Anderson Cooper provided Clinton a window of opportunity to respond, and Clinton kept it brief.

"Secretary Clinton, do you want to respond?" Cooper asked.

"No," Clinton said.

"Donald Trump, that carnival barker in the Republican party" -- Martin O'Malley on Donald Trump

The night would not be complete without an attack on the GOP front-runner.

"And a lot of the xenophobes, like some that we've heard, like Donald Trump, that carnival barker in the Republican party tried to mischaracterize it as free tuition for illegal immigrants," O'Malley said during his argument that he would grant undocumented immigrants in-state tuition.

"I have had no scandals." -- Lincoln Chafee

While introducing himself, Chafee pitched himself to voters as a candidate who hasn't faced a scandal.

"I'm very proud that over my almost 30 years of public service I have had no scandals. I've always been honest," Chafee said. "Had the courage to take the long-term view and I've shown good judgment. I have high ethical standards."

"You're looking at a block of granite." -- Chafee on his changing of parties

Chafee has changed parties from Republican to Independent and finally to Democrat. Cooper asked Chafee why should liberal voters trust he won't change parties again.

Chafee insisted his stances on the issues have been solid.

"Anderson, you're looking at a block of granite when it comes to the issues," Chafee said. The former Rhode Island governor went on to say that he is a "proud Democrat" and has not changed on the issues.

"We are not Denmark." -- Clinton responds to Sanders' comment

Sanders was making the argument that the U.S. should look at Denmark, Sweden and Norway to "learn from what they have accomplished for their working people."

"I think what Senator Sanders is saying certainly makes sense in the terms of the inequality that we have," Clinton said. "But we are not Denmark. I love Denmark."

"No not at all." -- Clinton on Sanders' gun position

The first strong attack from one candidate against another on stage came from Clinton against Sanders. Cooper asked Clinton if she thought Sanders was strong on guns. Clinton quickly answered, "No, not at all."

Sanders responded, "What I can tell Secretary Clinton that all the shouting in the world is not going to do what I would hope all of us want. And that is keep guns out of the hands of people who should not have those guns and end this horrible violence that we are seeing."

"It was my very first vote..." Chafee on defending his record on dealing with Wall Street.