President Donald Trump took to Truth Social on Friday, July 17, 2026, to announce his endorsement of Sen. Darline Graham Nordone, the newly appointed senator filling her late brother Lindsey Graham's seat. Trump urged her to run in the Special Republican Primary on Tuesday, August 11, 2026, for a full six-year term. He expressed his hope that she would honor her brother's legacy, stating, "I hope Darline does this, in that there would be nobody better to honor the legacy of her beloved brother, Lindsey." Trump's post indicated that he had met with Darline Graham in the Oval Office to ask her to consider the run.

Trump described Darline Graham Nordone as a "spectacular person" and a "true American Patriot," highlighting her "WINNER" status throughout her life and emphasizing that she comes from an "absolutely incredible family." He promised her his "Complete and Total Endorsement" if she chose to run. Her brother, Lindsey Graham, a prominent Republican figure, passed away suddenly on July 11, setting off a scramble for his Senate seat.

South Carolina Governor Henry McMaster appointed Darline Graham Nordone to serve out the remainder of her brother's term, which began on Tuesday, July 14, 2026. This appointment made her South Carolina's first female senator. The endorsement from Trump is significant, as potential candidates for the special primary election can begin filing their intentions on July 21. While Lindsey Graham's campaign account held millions of dollars, federal rules limit direct transfers to Darline Graham's potential candidacy to $2,000. However, the National Republican Senatorial Committee could spend an unlimited amount in coordination with her campaign, as there are no limits on transfers from Lindsey Graham's campaign to the NRSC, ensuring she would not be short of funds.