A civil rights organization said it has filed a federal lawsuit against South Carolina, contending the state unfairly limits how candidates are chosen to be on voter ballots.
The American Civil Liberties Union said it filed the lawsuit Thursday in U.S. District Court in Columbia.
The organization said the state's so-called sore loser law is unconstitutional. The law prevents a candidate who loses a primary election from appearing on a ballot as the candidate of a different political party.
The ACLU filed its lawsuit on behalf of a voter, the Green Party and a one-time state House candidate.
Election Commission spokesman Chris Whitmire said the law protects a party's selection process.