South Carolina’s 2026 U.S. Senate general election on November 3 features Republican nominee Darline Graham facing Democrat Annie Andrews in a solidly Republican state, yet the turnout market shows evenly balanced probabilities across multiple vote-total buckets. Midterm elections without a presidential contest on the ballot typically produce lower participation than presidential years, while the recent death of longtime Senator Lindsey Graham, the compressed special primary process, and the August 25 Republican runoff introduce uncertainty over base mobilization and crossover interest. Voter rolls, early voting access, campaign spending on turnout operations, and broader national political conditions remain key variables that could push totals higher or suppress them depending on enthusiasm levels among core Republican voters and Democratic efforts to expand the electorate.