Mississippi Code Title 23. Elections § 23-15-391

The board of supervisors of each county and the governing authorities of each municipality shall use optical mark reading equipment or direct recording electronic voting equipment that complies with the specifications provided by law. The election commissioners may conduct special and municipal elections, as well as any necessary runoff elections, by paper ballot when the election commissioners determine that administration of an election by paper ballot will be less expensive than administration of the same election by optical mark reading equipment or direct recording electronic voting equipment.