Democratic Debate Highlights You May Have Missed

Hillary Clinton, Bernie Sanders and Martin O'Malley continued their battle to become the presidential nominee for their party.
6:27 | 12/20/15

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Transcript for Democratic Debate Highlights You May Have Missed
so, how did it get on that plane? We want to move on to the big debate overnight in new Hampshire, seven weeks before the primary there, Hillary Clinton and her democratic rivals facing off for the last time this year. It all went down right here on ABC. The defate featured arguments and a closing line from Clinton that went immediately viral. Cecilia Vega has more. Reporter: A star wars reference for you. Good morning. They battled on the stage over taxes, Wall Street, two candidates reunited over two words, I apologize. Yes, I apologize. Reporter: Those three words from Bernie sanders right out of the gate, an apology for his campaign breach of Hillary's private voter data. I want to apologize to my supporters. This is not the type of campaign that we run. And if I find anybody else involved in this. Reporter: From the front-runner rival standing right next to him, apology accepted. I very much appreciate that comment, Bernie, it really is important that we go forward on this obviously we were distress when we learned of it because we have worked very hard. Reporter: The last democratic debate of 2015 -- Now this is getting to be fun. Reporter: Hardly a love fest. Clinton and sanders tussling over guns -- Guns in my opinion won't make America safer. It's a divided country on guns. A broad consequence on sensible gun safety regulations. Showing their differences on Wall Street. Should corporate America love Hillary Clinton? Everybody should. Wall Street is going to like me even less. Reporter: And tag-teaming the third person on that stage, former Maryland governor martin O'Malley. Because of the flip-flopping flip-flopping political approach of Washington that both of my two colleagues on the stage have represented for the last 40 years. Whoa, whoa, whoa. Let's calm down a little bit, martin. Yeah, let's tell the truth, martin. Reporter: O'Malley the youngest on stage made a dig at age. One man garnered serious atex not even on that stage. Leading gop candidate Donald Trump. He is bming Isis' best recruiter. Someone like a trump comes along and says, I know the answers, we hate all the muslims. Because all the muslims are terrorists. Reporter: Clinton delivering a few laughs, too. A late arrival from a commercial break. Sorry. Reporter: And that closing line now trending on Twitter. And may the force be with you. Yeah that became one of the most talked about moments of the night. There was -- when it was all over, one big disagreement, both the Clinton and sanders campaigns claiming victory last night. Cecilia, may the force be with you. I know you're operating very little sleep. We'll bring in George stephanopoulos the host of ABC's "This week" in Manchester alongside political analyst Matthew dowd as well as our chief white house correspondent, Jon Karl. Good morning George and good morning, gentlemen good morning, Paula. Thank you very much. Matthew dowd, Cecilia said both sides claiming victory. You know George, we have covered enough campaigns, everybody claims victory. I think all three walked away with their best performance within the course of this campaign. I think Hillary Clinton had her a-game yesterday. Bernie sanders brought it. And I think martin O'Malley even did well. I think they all be happy. Nothing changes. Started out the night, Jon Karl, with that apology, but after the debate, the sanders' campaign announced they have suspended two more staffers, is this over? Look, so you have one person fired and two suspended. More possibly coming. It's not over. He apologized. It was interesting, even as he apologized, he had bitter words about the dnc and how they handled it. And look, the Hillary Clinton campaign still thinks this was a serious breach of their personal propriety data. Sanders believes that the dnc is on the side of Hillary Clinton. And they're very mad about it. They are. Donald Trump front and center last night attacked nine separate times. The only republican candidate mentioned. All the democrats said they want to run against. He put out a tweet last night, no, no, that's what they're saying, they're afraid of me. Many of us didn't think he was going to get in this race, now every republican pivots off of him. And now, every democrats are pivoting off of Donald Trump. Donald Trump was the only republican mentioned. It will only help him in the course of the republican -- Maybe not only the winner here was Hillary Clinton but Donald Trump. This was the last debate of this year. We got six weeks until the votes in Iowa and New Hampshire. What has to happen? The big thing is, Bernie sanders needs to pull off a win in Iowa, if he can pull off a win in Iowa, he comes in where he's right now, arguably the favorite in New Hampshire, two big wins, he still faces an uphill battle in all of the 48 states. That would create quite a dynamic. Okay, guys, thanks very much. Thank you, George. More on "This week" with senator sanders and republican candidates Donald Trump and new Jersey governor Chris Christie. We do move now to a disturbing new video of a fatal

This transcript has been automatically generated and may not be 100% accurate.

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