Trump backs Lindsey Graham’s sister in South Carolina Senate primary

https://www.cnn.com/2026/07/13/politics/darline-graham-nordone-south-carolina-trump

Darline Graham Nordone, sister of the late Senator Lindsey Graham, has received an endorsement from former President Donald Trump in her bid for the South Carolina Senate seat. Nordone is running in a special Republican primary to fill the vacancy left by her brother’s passing. The endorsement from Trump, a significant figure within the GOP, is expected to bolster her campaign as she competes against nine other candidates. A recent poll indicates she is trailing Ralph Norman by three points, despite the endorsement.

Key Takeaways

• Market activity suggests Trump’s endorsement of Darline Graham Nordone is providing momentum for her campaign.
• Current pricing implies a 72% probability of Nordone winning the primary, reflecting increased confidence since the endorsement.
• Ralph Norman, a key competitor, is priced at 21% YES, indicating a competitive race with potential shifts in support.

What to Watch

Observers will focus on the impact of Trump’s endorsement on voter turnout and support for Nordone. The South Carolina State Election Commission will play a pivotal role in overseeing the election process. Any shifts in polling data leading up to the primary could significantly influence market pricing, especially if other candidates receive similar high-profile endorsements.

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