We'll kick things off at 6:00 p.m. with the kids' table debate for the candidates who didn't make the primetime cut.
At 8:00 p.m. we'll dive into the grownups debate, which will feature Carly Fiorina, plus the 10 top polling hopefuls from last time:
Real estate magnate Donald Trump; former Florida Gov. Jeb Bush; Wisconsin Gov. Scott Walker; former Arkansas Gov. Mike Huckabee; retired neurosurgeon Ben Carson; Texas Sen. Ted Cruz; Florida Sen. Marco Rubio; Kentucky Sen. Rand Paul; New Jersey Gov. Chris Christie; and Ohio Gov. John Kasich.
The debates will air on CNN and be moderated by Jake Tapper, Dana Bash, and Hugh Hewitt. It can be streamed here.