Republican Dianne Mitchell is leading in the polls for the State House District 21 special primary runoff election with 50.36% of the vote over her opponent, Steve Nail. If the results are certified, Mitchell will run uncontested on the Dec. 23 special election ballot for South Carolina House District 21. The election followed the resignation of House Representative Bobby Cox and ran simultaneously with the special primary for Senate District 12, which Lee Bright won.

No winner was announced for the South Carolina House District 21 Special Primary, according to unofficial results from the South Carolina Election Commission. A runoff election between Dianne Mitchell and Steve Nail will be held on Nov. 4, with early voting from Oct. 29-31. The winner of the primary runoff will run unopposed on the Dec. 23 ballot.