Democrat Jon Ossoff will participate in a live candidate program at 5 p.m., but Republican Sen. David Perdue has declined to participate. The Atlanta Press Club has said the invitation remains open for him to join the debate.
The debate between Loeffler and Warnock may be the only debate before the runoff. In addition to GPB, the debate has been picked up by other broadcast and cable stations, including CNN, Fox News, and C-SPAN.
Watch the debate here
To learn more about each candidate, see the links at the end of this article for a profile of each one.
The runoffs are Tuesday, Jan. 5.
The debates will be moderated by Russ Spencer, news anchor at Fox 5 (WAGA-TV). Panelists will be Greg Bluestein of The Atlanta Journal-Constitution and Lisa Rayam of WABE-FM.
The AJC will provide coverage of the debates on ajc.com and in The Atlanta Journal-Constitution.
How to watch: The debates will be broadcast live on GPB-TV. They can be viewed as livestream or later on demand on GPB.org and The Atlanta Press Club Facebook page.
The Atlanta Press Club Loudermilk-Young Debate Series is presented by the Atlanta Press Club and Georgia Public Broadcasting.
Monday is the voter registration deadline for the Jan. 5 runoff elections. In addition to the two U.S. Senate races, there is a Georgia Public Service Commission runoff on the ballot.
About the candidates
Profile of Republican Kelly Loeffler
Profile of Democrat Raphael Warnock
Profile of Republican David Perdue
Profile of Democrat Jon Ossoff