Sen. Darline Graham and U.S. Rep. Ralph Norman advanced to a runoff in South Carolina's special Republican primary for the U.S. Senate seat left vacant by the death of Graham’s brother, Lindsey.

Graham, who was appointed to complete her brother's term, finished first among a field of 10 candidates. Norman placed second, securing his spot on the Aug. 25 ballot.

According to theAssociated Press, Graham won with 32.7% of the vote, and Norman received 24.7%.

In South Carolina, a runoff election occurs when no candidate receives a majority of the vote in the initial primary. The top two vote-getters then face off in a head-to-head contest to determine the nominee.

Graham, a first-time candidate who benefited from her close ties to her brother's political network, led the field despite questions about her experience. She holds an endorsement from President Donald Trump.

Following her victory, Graham called Trump to thank him for his support. Reporters speaking to Trump asked if the president would consider campaigning for Graham; he responded: “I think so.”

Norman, a congressman representing the state's 5th District, outperformed other contenders including U.S. Rep. Russell Fry and former Gov. Mark Sanford to claim the second spot. He performed strongly in Upstate counties.

Graham may run into issues in her pursuit of the Senate seat, as her lack of political experience could become more of a concern for voters in the runoff election. While bolstered by Trump's support and the goodwill generated by her late brother, Graham will now need to begin differentiating herself from the competition. News outlet Politico made a comparison of Graham’s campaign to Lt. Gov. Pamela Evette, who had Trump's endorsement in the GOP governor’s primary and then lost to Alan Wilson in the runoff after he rose in the polls and secured a rare double endorsement from the president.

In an interview with the outlet, Evette expressed that she needed more assistance from the president in order to win the nomination, saying, “Obviously, yes. I do wish that, but you know, it didn’t happen that way.”

The winner of the Aug. 25 runoff will face Democrat Annie Andrews in the November general election.