A special Republican Party primary is scheduled for August 11, 2026, in South Carolina to determine which Republican candidate will run in the state's general election on November 3, 2026.
The special primary became necessary after incumbent Lindsey Graham (R), the Republican nominee selected at the June 9 primary, died on July 11, 2026. Graham won re-nomination with 57% of the vote.
On July 13, 2026, Gov. Henry McMaster (R) appointed Graham's sister, Darline Graham (R-S.C.), to complete Graham's term. She is the first sibling in U.S. history to be appointed to succeed a senator since the ratification of the 17th Amendment provided for the direct election of senators in 1913.
