Republican debate 2016: start time, schedule, and what to expect

The next Republican presidential debate will be tonight at 9 pm Eastern. It will take place in Greenville, South Carolina, and will air on CBS. An online live stream will be available at CBSNews.com.

Now that Iowa and New Hampshire have voted, the GOP field has gotten a lot smaller. Only six candidates will be onstage tonight: Donald Trump, Ted Cruz, Marco Rubio, Jeb Bush, John Kasich, and Ben Carson.

This will be the final GOP debate before the party's South Carolina primary on February 20 and its Nevada caucuses on February 23. Then there will be one more Republican debate before the March 1 "SEC primary," in which many Southern states and a few non-Southern ones will go to the polls.

What to expect at the CBS Republican debate

The nomination contest has entered a dangerous phase for the Republican establishment. Ted Cruz and Donald Trump — two candidates loathed by party elites — have won the two contests so far, and by most accounts are the two top contenders in South Carolina as well. Even many who have long been skeptical of Trump's chances are starting to admit that he could really win this thing.

But a bizarre dynamic to the race has persisted, in which all of the non-Trump candidates are still more focused on attacking each other than they are on attacking Trump. From each candidate's perspective, it makes sense — they're all hoping to end up the last non-Trump candidate standing, and to eventually take on the billionaire head to head. But as long as they all remain in the race and fighting each other, Trump seems more likely to cruise to victory.

The non-Trump vote is so divided because Marco Rubio, the emerging establishment Republican favorite, stumbled in New Hampshire, finishing in fifth place behind Trump, John Kasich, Ted Cruz, and Jeb Bush. As a result, Kasich and Bush decided to stay in the race, which could ensure that the more mainstream GOP vote will remain divided for some time.

One of the big questions of this debate is whether Rubio can recover from his panned performance last time around. If he manages to come off as unscripted — say, if he wins some tense one-on-one exchanges with other candidates — he could be deemed the debate's winner and regain some of the ground he's lost both in the polls and in elite opinion.

Still, the marquee contest has to be Trump versus Cruz — both are battling to win South Carolina. Things have gotten increasingly tense between them lately. Cruz is running a new ad attacking Trump over his attempt in the 1990s to use eminent domain to take an elderly widow's home so he could build a limousine parking lot. And Trump has been striking back against Cruz on Twitter, asking on Friday, "How can Ted Cruz be an Evangelical Christian when he lies so much and is so dishonest?" We'll see how their rivalry plays out during the debate.

How to watch:

When: Saturday, February 13, 9 pm Eastern

Where: Greenville, South Carolina

TV: CBS

Online: CBSNews.com

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