The 2026 United States Senate election in South Carolina will determine who represents the state in the U.S. Senate for the term beginning January 2027. This election is part of the 2026 Senate cycle, which includes 33 or 34 seats up for regular election. South Carolina's Senate seat is currently held by Republican Tim Scott, who was first appointed in 2013 and elected to full terms in 2014, 2016 (special), and 2022. Scott has not announced whether he will seek reelection or pursue other opportunities, such as a potential presidential run. The outcome of this race could affect the balance of power in the Senate, which has been closely divided in recent sessions. South Carolina has not elected a Democrat to the Senate since Ernest Hollings in 1992. Republicans have held both Senate seats since 2005, when Jim DeMint replaced Hollings. The state's Republican lean is strong: Donald Trump won South Carolina by 11 points in 2024 and by 12 points in 2020. However, Democratic candidates have occasionally run competitive races, such as Jaime Harrison's 2020 campaign against Lindsey Graham, which raised over $130 million but ended in a 10-point loss. The 2026 race will be shaped by candidate recruitment, national political trends, and the midterm environment, which historically favors the party out of the White House. As of 2025, no major candidates have formally declared, but several names are circulating. The prediction market asks whether a representative of a specific party will be sworn in, meaning the market will resolve based on the party affiliation of the eventual winner. This market is of interest to political analysts, campaign strategists, and donors who want to gauge the likelihood of a Republican hold or a Democratic flip. The outcome will also influence policy debates on issues like healthcare, taxes, and judicial confirmations, as Senate control determines legislative priorities and committee leadership.

Historical Context

South Carolina has a long history of Republican dominance in federal elections, particularly since the 1980s. The last Democrat to win a Senate seat in the state was Ernest Hollings, who was first elected in 1966 and served until 2005. Hollings was a moderate Democrat who won his final term in 1992 with 50% of the vote. After his retirement, Republican Jim DeMint won the seat in 2004 with 54%. DeMint resigned in 2013 to lead the Heritage Foundation, leading to Tim Scott's appointment. Scott became the first African American senator from South Carolina since Reconstruction. In the other Senate seat, Republican Strom Thurmond held it from 1956 to 2003, switching from Democrat to Republican in 1964. Thurmond's retirement led to Lindsey Graham's election in 2002. The state's shift to the GOP was solidified by national trends, including the Civil Rights Act of 1964 and the Southern strategy. In presidential elections, South Carolina has voted Republican in every election since 1980, except for 1976 when Jimmy Carter won. The state's primary is a key early contest in presidential cycles. In Senate races, Democrats have occasionally run competitive campaigns. In 2014, Democrat Brad Hutto lost to Tim Scott 38% to 61%. In 2020, Jaime Harrison raised over $130 million but lost to Lindsey Graham 44% to 54%. That race was the most expensive Senate campaign in history at the time. The 2026 election will occur in a midterm year, which typically sees lower turnout and a penalty for the president's party. Since 2006, the president's party has lost an average of 25 House seats and 3 Senate seats in midterms. However, South Carolina's strong Republican lean may insulate the incumbent party from national headwinds. The last time a Senate seat flipped in South Carolina was 2004, when DeMint won the open seat. No Democratic Senate candidate has won in the state since 1992.