WATCH: Republican Presidential Debate

People wait in line to enter the Republican presidential debate at St. Anselm College on Saturday. (Getty Images)
People wait in line to enter the Republican presidential debate at St. Anselm College on Saturday. (Getty Images)

After skipping the last GOP debate and coming second in Iowa, Donald Trump will be center stage once again Saturday night in the latest Republican presidential debate. Eyes are also on Iowa winner Ted Cruz and Marco Rubio, who finished a better-than-expected third. It's the last debate before Tuesday's New Hampshire primary. The debate starts at 8:15 p.m. ET at St. Anselm College in Manchester, N.H.

You can watch the live stream above, via ABC News, and check back here for the news — we'll update this story as the night goes on.

Here are three things we're watching tonight, from National Political Correspondent Mara Liasson.

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