O.C.G.A. § 36-30-13

Except as provided in subsection (g) of Code Section 21-4-13, in the event that all seats on the governing authority of a municipality are vacant, the election superintendent of the county in which the municipality is located shall have the authority to call for a special election to fill the vacant offices and to conduct, or to appoint a superintendent of elections for the municipality for the purpose of conducting, the special election. The board of registrars for the county shall prepare the electors list for the special election.