South Carolina Republicans are voting Tuesday, August 11, in a special U.S. Senate primary that will decide who gets the party's November ballot line for the seat held by the late Sen. Lindsey Graham.
The short answer: this may not end tonight. If no candidate wins a majority, the top two finishers advance to an August 25 runoff, according to the Associated Press. Polls close at 7 p.m. Eastern, and anyone already in line at that time may still vote, the South Carolina Election Commission said.
The race matters beyond one state because it tests how quickly a party can reorganize around a Senate seat after a sudden vacancy, and how much weight a famous name and a presidential endorsement carry in a crowded primary.
What changed
Graham had already been nominated for another term before his death on July 11. South Carolina Gov. Henry McMaster appointed Graham's sister, Darline Graham, to serve temporarily, and she is now seeking the full term with President Donald Trump's backing.
She is not running alone. AP identified 10 Republicans in the special primary, including U.S. Reps. Ralph Norman and Russell Fry, former Gov. Mark Sanford and businessman Mark Lynch. The winner will face Democrat Annie Andrews in November.
That crowded field is why the majority threshold matters. A first-place finish is not enough unless the leader clears 50%. If the race goes to a runoff, the campaign resets for two more weeks, and the question becomes whether anti-Graham or anti-establishment voters consolidate behind the second-place candidate.
What voters need to know
The Election Commission said more than 61,000 votes had already been cast before Election Day. Not every South Carolina voter can participate: people who voted in the June Democratic primary are not eligible for this special Republican primary. Those who voted in the June Republican primary, or who skipped both June party primaries, are eligible.
Voters must bring a current, valid photo ID, such as a South Carolina driver's license, a state DMV ID card, a voter registration card with photo, a federal military ID or a U.S. passport. Absentee ballots must reach the county voter registration office by 7 p.m. on August 11 to count.
What to watch tonight
The first signal is whether Darline Graham can convert appointment, name recognition and Trump's endorsement into an outright majority. A second signal is whether Norman, Fry, Sanford or Lynch becomes the single strongest alternative if the race extends to August 25.
AP's decision notes also matter because the primary is not a normal statewide contest with an incumbent on the ballot. Early and absentee results can arrive before a full picture of Election Day turnout, and a close second-place fight could be just as important as the top line if no candidate clears the runoff threshold.
Do not treat early vote totals or partial precinct returns as the final answer. The meaningful result is whether any candidate crosses the majority line. If no one does, South Carolina's Senate succession fight becomes a runoff campaign rather than a one-night decision.
