However, voters and Republicans are a bit hesitant about the incumbent’s electability following last Tuesday’s debate performance.

Graham, a political novice, was asked whether the U.S. has a national security interest in Taiwan and the South China Sea — a longstanding contention of both Democratic and Republican administrations. She struggled to answer before admitting, “National security is not my thing.”

Norman went on the offense following Graham’s weak answer, saying, “You need to get fully versed in what issues you’re going to be dealing with. This isn’t a get training on the job, you can’t do that.”

Needing to overcome Graham’s endorsement by President Donald Trump, Norman laid into his opponent's inexperience, highlighting her late brother's expertise in foreign policy.

When asked about national security issues regarding Taiwan and the South China Sea towards the United States, Graham bluntly said, “I’m just going to be honest here. I’m not that informed on national security, so — but I do support the military.”

Fellow South Carolinian Republican, Rep. Nancy Mace, added to the verbal dogpile, expressing concern about Graham’s debate answers.

“Saying national security isn’t your thing is like applying to be a lifeguard and saying water isn’t your thing,” Mace said.

Graham, who has been endorsed by President Donald Trump, was asked whether she’d be in favor of putting “troops on the ground” in Iran.

“I trust President Trump to make that decision, and the team of generals he has around him,” Graham replied. “I do know this, that, you know, we, that’s been going on for 47 years. I feel like Iran is the weakest it’s ever been, but, uh, they’re still strong; they’re still dangerous. So, I trust President Trump to make that decision.”

Regardless, Graham still has strong Republican backing heading into Tuesday’s Special Runoff Election.

South Carolina Republican Sen. Tim Scott called fellow Sen. Darline Graham "ready for prime time" as well as "highly qualified" and "incredibly competent."

She has the aforementioned endorsement of President Trump, who continues to promote the incumbent, calling her responses “very honest.”

While en route to a South Carolina rally for Graham, reporters asked Trump about her response on Taiwan. The president responded, She's very smart. She's into the price of groceries. She is going to do what the military wants, and really what the president wants. She understands that national security is my thing. I thought it was a very honest answer.”

Last-minute polling conducted by the prediction market “Kalshi” showed Graham had about an 89% chance of winning the nomination.

During South Carolina’s primaries, Graham won with 32.7% of the vote, and Norman received 24.7%.

Polls will close on Tuesday at 7 p.m.