Republican Deborah Long will face Democrat Fred Thomas in the race for the S.C. House District 45 seat in November.
The two bested their opponents in their respective primary on Tuesday night.
The district covers mostly Lancaster County and parts of York County.
Long, who's seeking political office for the first time, received 69 percent of the Lancaster County votes and Bruce Miller had nearly 31 percent –1087 to 482, according to unofficial totals. She won each of the 13 Lancaster County precincts except Belair.