Who is Herschel Walker?
Walker hopes to do what former Sen. Kelly Loeffler could not and defeat Warnock in a runoff election in Georgia.
Walker is a football legend in the state known for scoring touchdowns in the University of Georgia's 1980 championship season.
Now a businessman, he entered the Senate primary in August 2021 at the urging of former President Donald Trump, a longtime friend, whose swift support largely cleared the field.
"I'm here to win the seat for the Georgia people because the Georgia people need a winner," he said in October.
Both the November election and the runoff have seen Walker deny a series of allegations from women, including that he paid for their abortions, which he has said is not true. He is running as a staunchly anti-abortion candidate.
During the campaign, Walker's past also received new scrutiny, such as resurfaced reports about violence in his first marriage -- which he didn't contest -- amid what he said was a struggle with dissociative identity disorder.