All eyes will be on Las Vegas tonight as the candidates for the GOP presidential nomination face off at the Venetian Hotel.

Unlike the previous debate, Chris Christie will be joining the main stage. He'll be joined by frontrunner Donald Trump, retired neurosurgeon Ben Carson, Texas Senator Ted Cruz, Florid Senator Marco Rubio, former Florida governor Jeb Bush, former HP CEO Carly Fiorina, Ohio Governor John Kasich, and Kentucky Senator Rand Paul.

Here's how the podium arrangement breaks down:

An early debate will be held prior to the prime-time debate. Former Pennsylvania Senator Rick Santorum, Former Arkansas Governor Mike Huckabee, South Carolina Senator Lindsay Graham, and former New York Governor George Pataki.

Here's how the podium arrangement breaks down for the early debate:

We'll have pre-game analysis for tonights debates on today's Sean Hannity Show, and reaction from the participants on tonight's Hannity.