WASHINGTON (AP) — The sister of the late South Carolina Sen. Lindsey Graham has been sworn in to fill his seat, just three days after his death. Darline Graham was sworn in at the Senate on Tuesday. Darline Graham was appointed by South Carolina Gov. Henry McMaster on Monday to fill the remaining months of her brother’s term. A separate special election will be held next month to pick a new Republican nominee in the general election for Lindsey’s Graham’s seat, as he had been seeking a fifth term this year. Darline Graham will be the state’s first female senator. She has not previously held public office.