Darline Graham holds a commanding lead in trader consensus for South Carolina’s Senate seat due to the state’s longstanding Republican dominance, her appointment to succeed her late brother Lindsey Graham, and her subsequent primary victory with President Trump’s endorsement. Recent polls show her ahead by single digits, though the race has tightened modestly amid national headwinds for Republicans. The October 11 debate highlighted personal exchanges over names and qualifications, with Graham emphasizing continuity and Andrews, a pediatrician and political newcomer, focusing on economic pressures and affordability. Early voting begins October 19 ahead of the November 3 election, and structural factors such as South Carolina’s voting patterns continue to underpin the wide gap in implied probabilities despite Andrews’s efforts to broaden her appeal.