Darline Graham won the South Carolina Republican Senate primary runoff this week, securing the party nomination for the November general election [1, 2, 3].

The victory ensures that a candidate endorsed by Donald Trump will seek the seat, maintaining the influence of the Trump-backed slate within the state's GOP. It also keeps the seat within the Graham family, which has held the position for more than 20 years [5].

Graham defeated Rep. Ralph Norman (R-SC) in the runoff [1]. The campaign for the nomination saw significant financial investment, including a final push of $827,000 in funding for Graham's runoff effort [4].

The election follows the death of Sen. Lindsey Graham in July 2026 [5]. Darline Graham is the sister of the late senator, and her victory positions her to fill the vacancy left by her brother's death [1, 3, 5].

Reports of the victory surfaced on Aug. 26 [2]. Graham now advances to the general election in November to determine who will represent the state in the U.S. Senate.

Darline Graham won the South Carolina Republican Senate primary runoff this week.

This result reinforces the current alignment of the South Carolina Republican Party with Donald Trump's endorsement power. By securing the nomination, Darline Graham not only continues a family political legacy but also prevents a shift toward the wing of the party represented by Ralph Norman, ensuring the seat remains with a candidate explicitly aligned with the Trump slate heading into the November general election.