3 GCA § 11103: Two (2) Ballots in One (1) Envelope.

If a precinct board finds two (2) or more of the same ballots upon opening an absentee voter’s envelope, it shall lay them aside until the count of the ballots is complete. If, upon comparison of the count between ballots cast in that precinct and the number of voters on the roster who voted, it appears that two (2) ballots were cast by one (1) voter, the precinct board shall reject both ballots.