Darline Graham holds a strong lead in trader pricing for the 2026 South Carolina Senate race due to the state's consistent Republican lean, where no Democrat has won a Senate seat since 1998. Appointed to the seat after her brother Lindsey Graham's death in July 2026, she secured the GOP nomination in an August 25 runoff against Rep. Ralph Norman with President Trump's endorsement and campaign support. This incumbency edge, combined with the Graham family name recognition, has positioned her as the clear favorite against Democratic nominee Annie Andrews, a Charleston pediatrician who won her primary earlier. Recent polling averages show Graham ahead, though the race remains less lopsided than historical benchmarks, with Andrews mounting a campaign focused on healthcare and economic issues. The November 3 general election timeline leaves limited room for major shifts absent unexpected developments.