Overview
- South Carolina voters will choose a Republican nominee in a special primary on Aug. 11 with an Aug. 25 runoff likely if no candidate wins a majority.
- Governor Henry McMaster appointed Darline Graham as interim senator after her brother’s death and President Trump has urged and officially endorsed her to run for the full term.
- Darline Graham is a political newcomer campaigning on Trump-aligned priorities and a focus on household affordability rather than her brother’s foreign-policy emphasis.
- State GOP figures and donors have pushed back against the White House intervention, arguing the endorsement risks a top-down choice and has not produced a unified state party backing.
- If a sitting Republican member of the House wins the Senate seat, South Carolina would hold a separate special election for that House seat and the GOP could temporarily lose one vote in the chamber.