Sen. Raphael Warnock (D-Ga.) is currently holding a 2-point lead over Republican challenger Herschel Walker in the latest CBS News-YouGov poll. The poll, published on Wednesday, found that 51 percent of respondents supported Warnock, who defeated former Sen. Kelly Loeffler (R) in a special election last year, compared to 49 percent for Walker, who has the endorsement of former President Trump.