What's at stake

Control of a Senate seat will determine South Carolina's representation in Washington and affect the Senate's partisan arithmetic.

The office influences federal judicial confirmations, defense and trade funding, and the state's clout over federal projects and disaster relief.

Who's in play

Pamela Evette, Nancy Mace, Russell Fry, Mark Lynch, Nikki Haley, Ralph Norman, Darline Graham Nordone, Scott Bessent, and Trey Gowdy.

They include a former governor, current and former House members, the lieutenant governor, a financier, state legislators, and political newcomers with varied establishment backing.

What drives it

Endorsements from national and state figures, major donors, and party organizations reshape candidate viability quickly.

Polling, fundraising, turnout rules, debate performances, and any legal or personal controversies move probabilities; a runoff mechanism magnifies the importance of mobilizing core voters.

What to watch

Primary and any runoff dates, filing deadlines, and candidate filing lists define the immediate calendar and who appears on ballots.

Track weekly fundraising reports, statewide polls, major endorsements, debate schedules, local newspaper endorsements, and sudden withdrawals or legal developments that can reshape the race before ballots are cast.