S.C. Code § 44-7-620
Upon the filing of such petition, the county legislative delegation shall submit the question to the qualified electors of the county, township, city or town at a special election called for that purpose, first giving ninety days' notice thereof in one or more newspapers published in the county, township, city or town, if any be published therein, and by posting such notice, written or printed, in each township of the county in case of a county hospital or tuberculosis camp, or at three conspicuous places in the township, city or town in case of a township, city or town hospital or tuberculosis camp. Such election shall be held at the usual places in such county, township, city or town as provided for other elections, and the votes shall be canvassed in the same manner as in any election for officers for such county, township, city or town.
S.C. Code § 44-7-620