Darline Graham, sister of the late Senator Lindsey Graham, was sworn in on Tuesday to fill his vacant Senate seat, following his sudden death three days earlier.
Governor Henry McMaster of South Carolina appointed her to serve the remainder of her brother’s term.
Darline Graham entered the Senate chamber flanked by Senators Tim Scott, who assumed seniority for South Carolina, and Katie Britt of Alabama. Senator Chuck Grassley administered the oath; Graham placed her hand on a Bible and swore to “support and defend the Constitution of the United States against all enemies, foreign and domestic.” The chamber responded with prolonged applause.
With her inauguration, she became the first woman to represent South Carolina in the United States Senate.
Senator Lindsey Graham died on Saturday at age 71. With support from former President Donald Trump, Darline Graham was promptly appointed to complete the remaining months of his term, which concludes on January 3.
Governor McMaster remarked at a Monday press conference in Columbia, “Lindsey took care of his little sister for many years. It’s my honor to ask his little sister, Darline Graham, to finish his work for him now.”
Darline Graham described the appointment as an “honor” during brief Monday remarks, noting her role as her brother’s successor.
She pledged, “I will work diligently over the next several months to support the president and continue my brother’s efforts for the people of South Carolina and the nation. I believe this reflects Lindsey’s wishes, and I intend to honor him through this service.”
At the time of his death, Senator Graham was campaigning for a fifth term after winning the Republican nomination the previous month. The South Carolina Republican Party will hold a special primary on August 11 to select a new nominee, who will then face Democrat Annie Andrews in the November general election.
Darline Graham has never served in elected office, but has been a constant figure supporting her brother’s career as his national profile grew. Since 2019 she has served as commissioner of the South Carolina Commission for the Blind, according to Governor McMaster’s office. Prior experience includes roles at Clemson University and two South Carolina state agencies.

