South Carolina voters head to the polls tonight for a special Republican primary runoff to replace the late Senator Lindsey Graham, with appointed Senator Darline Graham facing Representative Ralph Norman in a race that tests President Donald Trump’s endorsement power and reveals deep divisions within the state GOP.
Graham, Lindsey Graham’s sister, advanced from the August 11 primary with 33 percent of the vote, while Norman, a nine-term congressman, finished second with 24 percent. The top two finishers automatically qualified for tonight’s runoff because no candidate reached the 50 percent threshold required to win outright, according to South Carolina election rules.
Lindsey Graham died on July 11 from an aortic dissection due to arteriosclerotic cardiovascular disease, triggering the special election to fill his seat through the 2026 midterm cycle and beyond. His death came at a critical moment in the political calendar, forcing an accelerated primary and runoff timeline that compressed the race into just weeks.
The runoff pits Graham’s moderate positioning against Norman’s emphasis on fiscal conservatism and government spending cuts. Trump’s backing of Graham marks a significant test of his influence in the state, having held a rally for her on August 24. However, former Governor Mark Sanford, who finished fourth in the primary with 14.9 percent, endorsed Norman on August 21, citing fiscal concerns. “As much as I would like to honor tradition and old friendships, the stakes are simply too high as our nation really is at a financial tipping point,” Sanford said in a statement, signaling that Trump’s endorsement alone may not be decisive.
Graham faced scrutiny during a recent debate with Norman over her foreign policy knowledge, with critics questioning her readiness for a Senate seat that traditionally handles complex international affairs. Norman has emphasized his nine years of congressional experience as a key differentiator, arguing he is “the only candidate in this race with the experience and the resume to take on this job.”
The winner of tonight’s runoff will advance to the November 2026 general election, where the Republican nominee will face the Democratic challenger in a seat that has been solidly Republican for decades. This special election is one of several high-stakes races unfolding across the country, with control of the Senate potentially at stake in 2026.
Turnout and final vote margins tonight could signal broader patterns for the midterm cycle. Graham’s seat heading to a runoff reflects the competitive nature of even traditionally safe Republican seats when circumstances force an open primary process.
Sources
- Ballotpedia — August 11 primary results showing Darline Graham at 33 percent and Ralph Norman at 24 percent; confirmation of August 25 runoff date
- NBC News — Lindsey Graham’s death on July 11, 2026, from aortic dissection due to arteriosclerotic cardiovascular disease
- Politico — Mark Sanford’s endorsement of Ralph Norman on August 21, his statement on fiscal concerns, and Trump’s rally backing for Darline Graham
- PBS NewsHour — Confirmation of the August 25 runoff between Darline Graham and Ralph Norman to replace Lindsey Graham
- South Carolina Elections Commission — Early voting dates (August 19–21) and runoff election procedures
