Darline Graham, a political newcomer appointed to the US Senate seat once held by her late brother Lindsey Graham, has won the Republican primary runoff in South Carolina, securing the party's nomination for a full six-year term in November. With more than 95% of the vote counted, Graham led her opponent, far-right Republican congressman Ralph Norman, by 52% to 48% — a margin of nearly five percentage points.
The result was shaped decisively by Donald Trump's high-profile intervention. The president, who had initially urged South Carolina's governor to appoint Graham to her brother's seat following Lindsey Graham's death last month, held a campaign rally in Myrtle Beach — a coastal city in Horry County, South Carolina's fastest-growing region — just days before the vote. He also hosted a tele-rally on the eve of election day, telling supporters: "Pretend, please, that I'm on the ballot." Voters in Horry County backed Graham by nearly three to one over Norman, proving decisive to her overall margin. Republican senator Tim Scott, who holds South Carolina's other Senate seat, also endorsed Graham, with some voters crediting his backing as equally influential. "His endorsement mattered a lot. It was the changing factor," said one voter in Conway.
Graham's path to the nomination was not without turbulence. In a debate on 18 August, she drew audience boos after saying "I'm not that informed on national security" when asked about US policy toward Taiwan. Norman, a seasoned legislator and former head of the right-wing House Freedom Caucus, offered voters a contrasting argument: that Washington experience matters. He had also positioned himself as a fiscal hawk, briefly withholding his vote for Trump's signature legislative package over concerns about its impact on the national debt — a stance that complicated his relationship with the president.
Graham's personal story added weight to her candidacy beyond politics. After their parents died when Darline was a young teenager, Lindsey Graham became her legal guardian and later her adoptive father. Before her sudden elevation to the Senate, she worked in vocational rehabilitation for people with disabilities. Some voters found her outsider status appealing. "Maybe more of our representatives need to go into the fray untainted by prior politics," said one transplant from New York now living in South Carolina.
The result matters beyond the Palmetto State. This year's primary season has been difficult for Trump-endorsed candidates, with ten losing statewide or congressional races — equal to the total across the previous three election cycles combined. Graham's win, alongside a Trump-backed candidate's victory in Oklahoma's gubernatorial runoff on the same night, offered the president a timely reaffirmation of his influence within the Republican Party. Graham thanked him directly in her victory speech: "Our victory would not have been possible without you." She is now heavily favoured to win the general election in deep-red South Carolina, where she will face Democratic nominee Annie Andrews, a physician.