South Carolina holds a special election to fill a vacant U.S. House seat, First district, on May 7. Three parties are nominating someone for that election. The Green Party will use a nominating convention on March 9 to choose either Eugene Platt or Larry Carter Center. The Democrats and the Republicans will choose their nominees by primary on March 19. With 16 Republicans running, it is likely the Republicans will also need a run-off primary, on April 2. Overseas and military absentee voters will use primary ballots that let them vote for several candidates and assign a ranking. Thanks to Eugene Platt for this news.