O.C.G.A. § 21-2-366

The governing authority of any county or municipality may, at any regular meeting or at a special meeting called for the purpose, by a majority vote authorize and direct the use of optical scanning voting systems for recording and computing the vote at elections held in the county or municipality. If so authorized and directed, the governing authority shall purchase, lease, rent, or otherwise procure optical scanning voting systems conforming to the requirements of this part.