No South Carolina statute limits yard political signs. Dorchester County reaches them only through its Zoning and Land Development Standards, and Summerville through its own zoning. Those rules must stay content-neutral after Reed v. Town of Gilbert, so a town cannot single out political signs by message.
Signs on private property are a zoning matter in Dorchester County, handled under the county's Zoning and Land Development Standards (Ordinance 04-13, as amended) in the unincorporated area and the Town of Summerville's sign rules inside town limits. Neither government may treat a political sign worse than any other temporary sign because of what it says; Reed v. Town of Gilbert (2015) makes content-based sign rules almost always unconstitutional, and neutral size, height, and setback limits are all a county may impose. The real prohibition is placement: a sign in the public right-of-way, on a utility pole, or within SCDOT road right-of-way is illegal and gets pulled. Highway frontage is separately controlled under the Highway Advertising Control Act, Section 57-25-110.
A political sign in the county or SCDOT right-of-way is removed, and repeat placement draws fines under the county's zoning standards. An ordinance limiting political signs by their message is unconstitutional and unenforceable.
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