WHAT

The fifth Republican presidential debate, hosted by CNN, Facebook and Salem Media.

WHERE

PhotosRelive the Nov. 10 GOP debate in 42 notable quotesCartoonsCartoons: The race to the presidency in 2016 More coverageThe 2016 campaign: Complete coverage

The Venetian Hotel in Las Vegas. It is owned by influentinal Republican donor Sheldon Adelson.

WHAT TIME TO WATCH

CNN’s coverage of the undercard debate with four candidates begins at 6 p.m. Eastern. Its coverage of the prime-time debate, which includes the top nine candidates in the GOP field, begins at 8:30 p.m.

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TV

On CNN and its digital platforms. Wolf Blitzer will be the moderator, with chief political correspondent Dana Bash and Salem Radio Network host Hugh Hewitt asking questions.

RADIO

@Newsday

You can listen to the debates on Salem Radio Network stations around the country. See salemmedia.com for a complete listing, or to listen to a livestream.

WHO’S ON THE STAGE?

The early lineup consists of South Carolina Sen. Lindsey Graham, former Arkansas Gov. Mike Huckabee, former New York Gov. George Pataki and former Pennsylvania Sen. Rick Santorum.

The prime-time lineup is former Florida Gov. Jeb Bush, retired neurosurgeon Ben Carson, New Jersey Gov. Chris Christie, Texas Sen. Ted Cruz, former Hewlett-Packard CEO Carly Fiorina, Ohio Gov. John Kasich, Kentucky Sen. Rand Paul, Florida Sen. Marco Rubio and businessman Donald Trump.

NOT THERE, BUT STILL IN THE RACE

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Former Virginia Gov. Jim Gilmore -- who, incidentally, will appear first on Massachusetts’ Republican presidential primary ballot on March 1 after a drawing Tuesday.

HASHTAG

#GOPDebate

-- With contributions from The Associated Press