O.C.G.A. § 21-2-230 (2019)
Challenge of persons on list of electors by other electors; procedure; hearing; right of appeal
(a) Any elector of the county or municipality may challenge the right of any other elector of the county or municipality, whose name appears on the list of electors, to vote in an election. Such challenge shall be in writing and specify distinctly the grounds of such challenge. Such challenge may be made at any time prior to the elector whose right to vote is being challenged voting at the elector’s polling place or, if such elector cast an absentee ballot, prior to 5:00 P.M. on the day before the absentee ballots are to begin to be scanned and tabulated; provided, however, that challenges to persons voting by absentee ballot in person at the office of the registrars or the absentee ballot clerk shall be made prior to such person’s voting. There shall not be a limit on the number of persons whose qualifications such elector may challenge. (b) Upon the filing of such challenge, the board of registrars shall immediately consider such challenge and determine whether probable cause exists to sustain such challenge. If the registrars do not find probable cause, the challenge shall be denied. If the registrars find probable cause, the registrars shall notify the poll officers of the challenged elector’s precinct or, if the challenged elector voted by absentee ballot, notify the poll officers at the absentee ballot precinct and, if practical, notify the challenged elector and afford such elector an opportunity to answer. (c) If the challenged elector appears at the polling place to vote, such elector shall be given the opportunity to appear before the registrars and answer the grounds of the challenge. (d) If the challenged elector does not cast an absentee ballot and does not appear at the polling place to vote and if the challenge is based on grounds other than the qualifications of the elector to remain on the list of electors, no further action by the registrars shall be required. (e) If the challenged elector cast an absentee ballot and it is not practical to conduct a hearing prior to the close of the polls and the challenge is based upon grounds other than the qualifications of the elector to remain on the list of electors, the absentee ballot shall be treated as a challenged ballot pursuant to subsection (e) of Code Section