O.C.G.A. § 21-2-433 (2019)

(a) No elector shall enter the enclosed space behind the guardrail provided for in subsection (a) of Code Section 21-2-267 until he or she is found entitled to vote. (b) As soon as an elector has been admitted within the enclosed space, the poll officer having charge of the ballots in precincts in which ballots are used shall detach a ballot from the stub and give it to the elector, first folding it so that the words and figures printed on the face shall not be visible, and no ballots shall be deposited in the ballot box unless folded in the same manner. If an elector’s right to vote has been challenged for cause under Code Section 21-2-230, the elector shall be entitled to vote a challenged ballot. Not more than one ballot shall be detached from its stub in any book of ballots at any one time. Not more than one ballot shall be given to an elector; but, if an elector inadvertently spoils a ballot, such elector may obtain another upon returning the spoiled one. The ballots thus returned shall be immediately

canceled and at the close of the polls shall be enclosed in an envelope, which shall be sealed and returned to the superintendent.