South Carolina Republicans are set to vote in a special primary on Tuesday to determine the party’s candidate for the U.S. Senate. This follows the passing of Lindsey Graham, who held the seat for 23 years. The primary race remains unpredictable with multiple candidates competing.
Current State of the Race
Interim Senator Darline Graham, Lindsey Graham’s sister, has shown a strong lead in some polls, although her advantage is narrower in others. Representative Ralph Norman has also shown significant support, leading one recent poll. With nine candidates running, South Carolina law might necessitate a runoff on August 25 if no candidate secures a majority.
Darline Graham’s Campaign
Darline Graham, at 62, was relatively unknown in the state’s political scene prior to her appointment by Governor Henry McMaster. This followed her brother’s sudden death on July 11. Despite her lack of elected office experience, her campaign centers on responding to President Trump’s call to serve.
At her campaign launch in Lexington, Graham expressed surprise at her entry into politics, emphasizing her intention to support Trump’s policies. Trump endorsed her shortly after her appointment, reinforcing her alignment with his agenda. The National Republican Senatorial Committee has also thrown its support behind her.
In a recent debate, Graham reiterated her support for the president’s border policies and proposed the end of the Senate filibuster for the SAVE America Act. She also highlighted the need for transparency in healthcare pricing to alleviate financial strains on families.
Polling Insights
Polls have not provided a definitive prediction. Ralph Norman, with five terms in the U.S. House, presents himself as an experienced conservative. Russell Fry, another Republican candidate, aims to prompt a runoff. Former Governor Mark Sanford is utilizing his longstanding political presence to gain traction.
The latest Quantus Insights survey shows Graham leading with 33% support, with Norman and Fry both at 20%, and Sanford at 17%. A co/efficient poll highlighted Graham ahead with 30%, followed by Fry at 16% and Norman at 15%. Hypothetical runoff scenarios showed Graham leading against Norman, and Fry against Graham.
Emerson College Polling’s survey placed Norman in the lead with 22% support, followed by Graham at 19%. Many voters remain undecided, creating potential for shifts in standings.
Market Predictions
Prediction markets have shown more confidence in Graham than the polls. On Kalshi, Graham traded at 48 cents, suggesting a 48% chance of nomination. Both Norman and Fry stand at 25 cents each. Similarly, on Polymarket, Graham’s probability stood at 46%, with Fry at 26%.
Graham’s Strategy
The campaign debate focuses on whether Graham’s connection to Lindsey Graham and Trump’s backing can compensate for her limited public political experience. Darline Graham has stayed relatively low profile, working in Washington and engaging minimally with media outlets.
She has participated in two candidate forums and a televised debate, advocating for changes to filibuster rules to push for stricter voting laws. Her media interactions have primarily been with Fox News and local sources.
November’s General Election Outlook
The Republican nominee is expected to have a strong advantage in the November election. South Carolina has consistently favored Republican candidates since 1998. Democratic nominee Annie Andrews will contest the seat regardless of when the primary decision concludes.

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