The closely contested South Carolina Senate race between appointed Republican incumbent Darline Graham and Democrat Annie Andrews has kept turnout expectations moderate, with trader consensus centering on the 1.6M-2M vote range. Recent polls showing Graham leading by just 1-3 points in a state that favored Republicans by double digits in 2024 have heightened focus on mobilization, as Democrats need elevated participation from younger, Black, and independent voters while Republicans rely on their older, rural base. Early voting beginning October 19, the October 11 debate, and get-out-the-vote efforts in swing counties could shift totals, while historical midterm patterns and the absence of a presidential contest on the ballot anchor probabilities away from extremes.