The 2026 United States Senate election in South Carolina will be held on November 3, 2026, to elect a member of the United States Senate to represent the state of South Carolina. Primary elections will be held on June 9, 2026, with a runoff election on June 23 if no candidate wins a majority in their respective primary. Incumbent four-term Republican Senator Lindsey Graham, who was re-elected in 2020, is running for a fifth term in office.
South Carolina is generally considered to be a Republican stronghold, having not elected a Democrat to the U.S. Senate since 1998. Republican nominee Donald Trump won South Carolina in 2020 by 12 percentage points, and in 2024 grew his margin to 18 percentage points. Republicans control every statewide office (except the state's comptroller office), supermajorities in both chambers of the state legislature, both U.S. Senate seats, and all but one seat in South Carolina's U.S. House congressional delegation.
Senator Lindsey Graham was first elected in 2002, defeating Democrat Alex Sanders by about 10 percentage points. He was re-elected in 2008, 2014, and most recently in 2020 defeating Jaime Harrison by 10 percentage points in what was expected to be a dead heat. In January 2025, he declared that he was running for reelection.
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Lindsey Graham vs. Annie Andrews
Lindsey Graham vs. generic Democrat
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