With just weeks to go before voters in Iowa and New Hampshire begin the 2016 presidential nominating process, the candidates are meeting again in the first Republican debate of the new year Thursday. Real estate mogul Donald Trump maintains his lead over the crowded field of Republican candidates, although Texas Sen. Ted Cruz and Florida Sen. Marco Rubio are narrowing that margin.

The debate moderators will probe Trump, Cruz, and Rubio, as well as former neurosurgeon Dr. Ben Carson, Gov. Chris Christie of New Jersey, former Gov. Jeb Bush of Florida and Gov. John Kasich of Ohio, in the primetime debate. Former Hewlett Packard CEO Carly Fiorina, former Gov. Mike Huckabee of Arkansas and former Sen. Rick Santorum of Pennsylvania will appear in an undercard debate for lower-polling candidates. Sen. Rand Paul of Kentucky says he will refuse to attend and should be in the top-line forum.

The Fox Business Network-Wall Street Journal hosted debate, scheduled to air Thursday at 9 p.m. EST, welcomes back network anchors Maria Bartiromo and Neil Cavuto for the primetime debate. In an undercard debate, scheduled to air earlier Thursday at 6 p.m. EST, Fox Business Network’s Trish Regan and Sandra Smith will return as moderators. Both debates will be held at the North Charleston Coliseum and Performing Arts Center in North Charleston, South Carolina.

The candidates are hoping for a strong showing in the Iowa caucus set for Feb. 1. The New Hampshire primary is set for Feb. 9. Here is everything you need to know to watch or listen to the Fox Business Network debates Thursday:

Main Debate

Start time:  9 p.m. EST

TV channel:  Fox Business Network

Online: The network is offering a live stream of both debates from 6 to 11 p.m. EST at FoxBusiness.com and on mobile devices.

Radio:  Find your local station here to listen live.

Early Debate

Start time:  6 p.m. EST

TV channel:  Fox Business Network

Online:  FoxBusiness.com

Radio:  Find your local station here to listen live.