Candidates want Lindsey Graham's Senate seat. They will debate on Monday.

New candidates and lawmakers will share the stage. They want to show they can take Graham's place.

Many candidates are running, but only a few are strong. They need to prove themselves on TV.

Trump's endorsement did not help one candidate. A former governor joined the race.

Lindsey Graham spoke to the media in Washington, D.C. He talked about Iran.

A political consultant said the debate is important. South Carolinians will hear from the candidates.

The consultant said the debate is like a job interview. Candidates must show they can handle the job.

Key candidates include Sen. Darline Graham and Reps. Ralph Norman and Russell Fry. Former Gov. Mark Sanford is also running.

Mace did not support Trump's candidate. She backed Ralph Norman instead.

Some candidates qualified for the debate. They met the South Carolina GOP's criteria.

A consultant said Norman and Sanford are well-known. They have experience in South Carolina politics.

Graham may benefit from her brother's name. But she lacks a record like the other candidates.

Trump supported Lindsey Graham's sister. She was appointed to finish his term.

Darline Graham spoke at a press conference. She was outside the governor's office in Columbia, S.C.

Russell Fry may gain the most from the debate. He lacks statewide campaign infrastructure and name recognition.

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A consultant said Russell Fry needs a strong debate performance. He must show he can work for the entire state.

Alex Miller writes for Fox News Digital. He covers the U.S. Senate.