What to know about Georgia's Senate race and Herschel Walker's abortion allegation

Herschel Walker, the Republican running to unseat incumbent Democratic Sen. Raphael Warnock in Georgia, this week denied reports that he had paid for a woman's abortion in 2009. 

Walker has vehemently denied the story, called it a "flat-out lie" and threatened to sue the outlet. CBS News has not confirmed the allegations and reporting by The Daily Beast.