Two Senate seats were up for election in November.  No candidate in either race won 50% of the vote, so as required by Georgia law, the top two candidates in each one are in the runoffs.

Senate race 1 is between Purdue (R) and Ossoff (D). 

Senate race 2 is between Loeffler(R) and Warnock(D).

You can vote for one candidate in each race.

If both Democratic candidates - Ossoff and Warnock - win their races, then Democrats will gain control of the Senate.

Ballotpedia: United States Senate election in Georgia 2020

Ballotpedia: United States Senate special election in Georgia, 2020