S.C. Code Ann. § 5-5-30: Determination of form of government by governing body effective until changed by election; subsequent elections.

Until changed by an election, the selection of the form of government as initially determined by the governing body by ordinance shall remain effective. The ordinance selecting the form of government shall be filed in the office of the Secretary of State who shall issue an appropriate certificate of incorporation to the municipality. No other such election shall be held for a period of four years after an election is held pursuant to SECTION 5-5-20.