2026 South Dakota House of Representatives election – District 21Nov 3, 2026IncumbentJim Halverson RepublicanGeneral electionNovember 3, 2026Marty Overweg Republican IncumbentDemocrat Nominee TBDPrimaries2026 South Dakota House of Representatives district 21 Republican primaryResults 9,183 votes✓Marty Overweg Incumbent35.1% 3,222Jim Halverson Incumbent30.1% 2,761John H. Harter22.4% 2,053Wyatt DeJong12.5% 1,147
