U.S. Rep. Doug Collins is the most formidable Republican challenger in the group, while other Democrats include Matt Lieberman, an educator and son of former Sen. Joe Lieberman, and Ed Tarver, a former federal prosecutor.
Warnock has the support of the political arm of Senate Democrats, several former presidential candidates in the chamber and other national figures. He also has the backing of Stacey Abrams, the 2018 gubernatorial contender, and dozens of local elected officials.
Clyburn, the House majority whip, help pave the way for Joe Biden’s runaway victory in South Carolina with his endorsement of the former vice president. He’s played an influential voice in Biden’s campaign since then, and his support is coveted by Democratic office-seekers.