A contentious South Carolina Senate runoff debate on Tuesday night featured sharp exchanges between Republican candidates Darline Graham and Congressman Ralph Norman, particularly focusing on national security and the state's population.

Darline Graham, who is temporarily holding the Senate seat vacated by her late brother Lindsey Graham, admitted during the debate that she was "not that informed" on national security matters when questioned about Taiwan and the South China Sea. "I'm just gonna be honest here. I'm not on national security — I'm not that informed on national security, so… But I do support the military," she stated. This admission quickly became a focal point for her opponent, Ralph Norman.

Norman, who has emphasized his experience in foreign policy, seized on Graham's comment. "South Carolina deserves a Senator who understands Foreign Policy. I'm a peace through strength supporter! No more forever wars!" he posted on X. Former South Carolina Governor Nikki Haley also commented, contrasting her assessment of Lindsey Graham's national security expertise with Darline Graham's statement, noting, "This is not something you inherit. And it's critical in the U.S. Senate."

Another notable exchange occurred when Graham misstated the population of South Carolina, suggesting that "50 million people in South Carolina were living paycheck to paycheck." The state's actual population is approximately 5.5 million residents. Norman criticized this statement, pointing out the inaccuracy and reiterating the need for candidates to understand state demographics. Former Representative Adam Morgan also questioned Graham's remark.

Despite these stumbles, Graham delivered strong criticisms of Norman's congressional record in her closing remarks. She argued that she had accomplished more in her 20 days in office than Norman had in two decades and humorously disparaged his achievements, stating, "You named a post office, so good job. That's all I can find that you've done."

The runoff election follows a primary where Graham secured first place with 32.7 percent of the vote, while Norman came in second with 24.3 percent. The August 25 runoff will determine who permanently fills the seat. Norman, in a recent Associated Press interview, questioned the strategy of supporting a political newcomer over an incumbent with a consistent record of supporting former President Donald Trump, while also reaffirming his own loyalty to Trump despite having backed Nikki Haley in the 2024 primary.