Republican candidates participate in the Fox News/Google debate in Des Moines, Iowa on Thursday.
The undercard debate starts at 7 p.m. EST, featuring Carly Fiorina, Rick Santorum, Mike Huckabee and Jim Gilmore.
The main event begins at 9 p.m. EST, featuring Ted Cruz, Marco Rubio, Ben Carson, Chris Christie, Jeb Bush, Rand Paul and John Kasich.
