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When the Las Vegas debate ends tonight, tune in to Fox News Channel for the best analysis on which of the Republican presidential candidates made the biggest impressions. 

Bill O'Reilly, Megyn Kelly and Sean Hannity will be ready with three hours of coverage, starting at 11:00 p.m. ET on The O'Reilly Factor, as Bill goes over the big moments and the night's winners and losers with Andrea Tantaros, Trish Regan, Charles Krauthammer, Juan Williams and Bret Baier.

At midnight, The Kelly File is live with must-see reactions from Frank Luntz's panel of voters, plus analysis from Brit Hume, Dana Perino, Howard Kurtz and Chris Stirewalt.

Then at 1:00 a.m., Hannity talks to the candidates from the spin room, including Ted Cruz, Ben Carson, John Kasich, Rand Paul and Mike Huckabee.

Heading into the latest forum, Donald Trump and Ted Cruz are seen as the clear top two, with Trump way out in front in national polls and Cruz surging to the lead in Iowa.

Many are eager to see how hard Trump will go after Cruz and how the Texas senator will respond.

See more pre-debate coverage at FoxNews.com.

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