South Carolina voted Republican by 17.9 points in 2024, Donald Trump taking 1,483,747 votes to Kamala Harris’s 1,028,452. The result rests on a vote that divides sharply by place and by race. Black residents make up 24.6 percent of the population, among the largest shares of any state, and the Democratic vote concentrates where that share is highest — the rural counties of the Lowcountry and the Pee Dee strung along Interstate 95, the Midlands seat of Columbia, and the coast at Charleston. Harris carried 12 of the state’s 46 counties; the other 34 went Republican.
Those 12 counties trace the old plantation belt. Allendale County, the bluest in the state, voted Democratic by 44.7 points; Orangeburg ran D+24.6, Williamsburg D+21.7, and the Midlands seat of Richland County, which holds Columbia and the University of South Carolina, went D+34.6. Charleston County, the coastal city and its suburbs, was narrower at D+5.7. Against that sits the Upstate around Greenville and Spartanburg: Pickens County, the reddest in the state, voted Republican by 52.7 points, and Greenville County alone delivered 158,541 Republican votes, the largest single-county total in South Carolina.
The state shifted further Republican in 2024. The 17.9-point margin widened from R+11.7 in 2020, a 6.2-point move toward Trump that showed across the Upstate and the coast. Spartanburg County went from R+27.3 in 2020 to R+33.6, and Horry County, on the Grand Strand around Myrtle Beach, from R+33.2 to R+38.5. South Carolina is among the most evangelical states in the country, ranking 7th of 50 in adherents, and ranks 42nd in both median household income and poverty. In 2026 it will choose a new governor — Henry McMaster is term-limited — with Republican Alan Wilson facing Democrat Jermaine Johnson, and Senator Lindsey Graham seeking a fifth term.