South Dakota Senate: Party Control

Current seats

Republican majorityDemocrats 3, Republicans 32. 35 seats; 18 for a majority.

Democrats 3Republicans 32

Control counts seats by party; coalitions and power-sharing agreements are not shown.

Members as of November 3, 2026 (Open States), before the winners of the November 3, 2026 elections take office.

South Dakota overviewSouth Dakota House

District map

Democrat 3Republican 32

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2024: the candidate(s) with the most votes in each contest (MEDSL); contests with unreliable rows are not shown. Lines of the 2024 elections (US Census Bureau).

Members as of November 3, 2026 (Open States), before the winners of the November 3, 2026 elections take office.

Seats after each election, 1968-2022

Seats by election, table

Year	D	R	Other	Seats	Control
2022	4	31	0	35	Republican majority
2020	3	32	0	35	Republican majority
2018	5	30	0	35	Republican majority
2016	6	29	0	35	Republican majority
2014	8	27	0	35	Republican majority
2012	7	28	0	35	Republican majority
2010	6	29	0	35	Republican majority
2008	14	20	1	35	Republican majority
2006	15	20	0	35	Republican majority
2004	10	25	0	35	Republican majority
2002	10	25	0	35	Republican majority
2000	11	24	0	35	Republican majority
1998	13	22	0	35	Republican majority
1996	13	22	0	35	Republican majority
1994	15	19	1	35	Republican majority
1992	20	15	0	35	Democratic majority
1990	16	19	0	35	Republican majority
1988	15	20	0	35	Republican majority
1986	12	23	0	35	Republican majority
1984	10	25	0	35	Republican majority
1982	9	26	0	35	Republican majority
1980	10	25	0	35	Republican majority
1978	11	24	0	35	Republican majority
1976	11	24	0	35	Republican majority
1974	19	16	0	35	Democratic majority
1972	19	16	0	35	Democratic majority
1970	11	24	0	35	Republican majority
1968	8	27	0	35	Republican majority

Carl Klarner, State Legislative Election Returns, 1967-2022: version 1.0, released June 12, 2024; a fixed historic release.

District results, 2016-2024

The candidate with the most votes in each contest.

2024: 35 contests

District	Most votes	Party	Share	Note
1	MICHAEL H ROHL	Republican	100.0%	one candidate
2	STEVE KOLBECK	Republican	100.0%	one candidate
3	CARL PERRY	Republican	100.0%	one candidate
4	STEPHANIE SAUDER	Republican	100.0%	one candidate
5	GLEN A VILHAUER	Republican	71.1%
6	ERNIE OTTEN	Republican	100.0%	one candidate
7	TIM REED	Republican	100.0%	one candidate
8	CASEY CRABTREE	Republican	100.0%	one candidate
9	JOY HOHN	Republican	100.0%	one candidate
10	LIZ LARSON	Democrat	100.0%	one candidate
11	CHRIS KARR	Republican	58.9%
12	ARCH BEAL	Republican	55.7%
13	SUE PETERSON	Republican	58.5%
14	LARRY P ZIKMUND	Republican	54.6%
15	JAMIE SMITH	Democrat	52.4%
16	KEVIN D JENSEN	Republican	100.0%	one candidate
17	SYDNEY DAVIS	Republican	100.0%	one candidate
18	LAUREN NELSON	Republican	57.2%
19	KYLE SCHOENFISH	Republican	77.2%
20	PAUL MISKIMINS	Republican	100.0%	one candidate
21	MYKALA VOITA	Republican	77.0%
22	DAVID WHEELER	Republican	73.2%
23	MARK LAPKA	Republican	100.0%	one candidate
24	JIM MEHLHAFF	Republican	100.0%	one candidate
25	TOM PISCHKE	Republican	72.7%
26	TAMARA GROVE	Republican	57.3%
27	RED DAWN FOSTER	Democrat	52.0%
28	SAM MARTY	Republican	64.0%
29	JOHN CARLEY	Republican	100.0%	one candidate
30	AMBER HULSE	Republican	74.4%
31	RANDY DEIBERT	Republican	100.0%	one candidate
32	HELENE DUHAMEL	Republican	60.0%
33	CURT VOIGHT	Republican	100.0%	one candidate
34	TAFFY HOWARD	Republican	60.2%
35	GREG BLANC	Republican	100.0%	one candidate

2022: 35 contests

District	Most votes	Party	Share	Note
1	MICHAEL H ROHL	Republican	58.9%
2	STEVE KOLBECK	Republican	100.0%	one candidate
3	AL NOVSTRUP	Republican	100.0%	one candidate
4	JOHN WIIK	Republican	100.0%	one candidate
5	LEE SCHOENBECK	Republican	100.0%	one candidate
6	HERMAN OTTEN	Republican	100.0%	one candidate
7	TIM REED	Republican	100.0%	one candidate
8	CASEY CRABTREE	Republican	100.0%	one candidate
9	BRENT HOFFMAN	Republican	100.0%	one candidate
10	LIZ LARSON	Democrat	56.7%
11	JIM STALZER	Republican	55.2%
12	ARCH BEAL	Republican	53.9%
13	JACK KOLBECK	Republican	70.2%
14	LARRY P ZIKMUND	Republican	53.9%
15	REYNOLD F NESIBA	Democrat	52.8%
16	JIM BOLIN	Republican	66.2%
17	SYDNEY DAVIS	Republican	100.0%	one candidate
18	JEAN M HUNHOFF	Republican	65.0%
19	KYLE SCHOENFISH	Republican	81.5%
20	JOSHUA KLUMB	Republican	100.0%	one candidate
21	ERIN TOBIN	Republican	81.8%
22	DAVID WHEELER	Republican	100.0%	one candidate
23	BRYAN J BREITLING	Republican	100.0%	one candidate
24	JIM MEHLHAFF	Republican	100.0%	one candidate
25	TOM PISCHKE	Republican	100.0%	one candidate
26	SHAWN BORDEAUX	Democrat	58.3%
27	RED DAWN FOSTER	Democrat	51.5%
28	RYAN M MAHER	Republican	100.0%	one candidate
29	DEAN WINK	Republican	100.0%	one candidate
30	JULIE FRYE-MUELLER	Republican	100.0%	one candidate
31	RANDY DEIBERT	Republican	100.0%	one candidate
32	HELENE DUHAMEL	Republican	56.2%
33	DAVID JOHNSON	Republican	75.7%
34	MICHAEL DIEDRICH	Republican	100.0%	one candidate
35	JESSICA CASTLEBERRY	Republican	100.0%	one candidate

2020: 35 contests

District	Most votes	Party	Share	Note
1	MICHAEL H ROHL	Republican	55.2%
2	BROCK L GREENFIELD	Republican	100.0%	one candidate
3	AL NOVSTRUP	Republican	100.0%	one candidate
4	JOHN WIIK	Republican	82.6%
5	LEE SCHOENBECK	Republican	79.0%
6	HERMAN OTTEN	Republican	66.7%
7	V J SMITH	Republican	100.0%	one candidate
8	CASEY CRABTREE	Republican	100.0%	one candidate
9	WAYNE H STEINHAUER	Republican	58.0%
10	MAGGIE SUTTON	Republican	62.8%
11	JIM STALZER	Republican	60.5%
12	R BLAKE CURD	Republican	54.1%
13	JACK KOLBECK	Republican	56.3%
14	LARRY P ZIKMUND	Republican	56.0%
15	REYNOLD F NESIBA	Democrat	54.8%
16	JIM BOLIN	Republican	100.0%	one candidate
17	ARTHUR RUSCH	Republican	63.9%
18	JEAN HUNHOFF	Republican	59.9%
19	KYLE SCHOENFISH	Republican	100.0%	one candidate
20	JOSHUA KLUMB	Republican	85.1%
21	ERIN TOBIN	Republican	79.2%
22	DAVID WHEELER	Republican	100.0%	one candidate
23	BRYAN J BREITLING	Republican	89.6%
24	MARY DUVALL	Republican	100.0%	one candidate
25	MARSHA SYMENS	Republican	58.9%
26	TROY HEINERT	Democrat	52.8%
27	RED DAWN FOSTER	Democrat	56.2%
28	RYAN M MAHER	Republican	100.0%	one candidate
29	GARY L CAMMACK	Republican	77.9%
30	JULIE FRYE-MUELLER	Republican	71.3%
31	TIMOTHY R JOHNS	Republican	100.0%	one candidate
32	HELENE DUHAMEL	Republican	64.1%
33	DAVID JOHNSON	Republican	68.1%
34	MICHAEL G DIEDRICH	Republican	64.4%
35	JESSICA CASTLEBERRY	Republican	61.6%

2018: 35 contests

District	Most votes	Party	Share	Note
1	SUSAN M WISMER	Democrat	100.0%	one candidate
2	BROCK L GREENFIELD	Republican	67.2%
3	AL NOVSTRUP	Republican	58.5%
4	JOHN WILK	Republican	64.8%
5	LEE SCHOENBECK	Republican	100.0%	2 seats; share of all votes cast; one candidate
6	ERNIE OTTEN	Republican	65.1%
7	V J SMITH	Republican	61.1%
8	JORDAN YOUNGBERG	Republican	55.2%
9	WAYNE H STEINHAUER	Republican	56.7%
10	MARGARET SUTTON	Republican	59.6%
11	JIM STALZER	Republican	60.4%
12	BLAKE CURD	Republican	50.1%
13	JACK KOLBECK	Republican	54.1%
14	DEB SOHOLT	Republican	60.5%
15	REYNOLD F NESIBA	Democrat	100.0%	one candidate
16	JIM BOLIN	Republican	68.5%
17	ARTHUR RUSCH	Republican	61.2%
18	CRAIG KENNEDY	Democrat	52.7%
19	STACE NELSON	Republican	74.0%
20	JOSHUA KLUMB	Republican	72.5%
21	ROCKY DALE BLARE	Republican	54.9%
22	JAMES WHITE	Republican	72.7%
23	JUSTIN R CRONIN	Republican	82.6%
24	JEFF MONROE	Republican	66.5%
25	KRIS K LANGER	Republican	68.3%
26	TROY HEINERT	Democrat	53.0%
27	RED DAWN FOSTER	Democrat	58.6%
28	RYAN M MAHER	Republican	67.8%
29	GARY L CAMMACK	Republican	71.5%
30	LANCE STEVEN RUSSELL	Republican	56.7%
31	BOB EWING	Republican	65.2%
32	ALAN SOLANO	Republican	62.2%
33	PHIL JENSEN	Republican	62.4%
34	JEFF PARTRIDGE	Republican	62.7%
35	LYNNE DISANTO	Republican	62.0%

2016: 35 contests

District	Most votes	Party	Share	Note
1	Jason Frerichs	not in source	100.0%	seats not in source; one candidate
2	Brock L. Greenfield	not in source	100.0%	seats not in source; one candidate
3	Al Novstrup	not in source	61.2%	seats not in source
4	John Wiik	not in source	60.4%	seats not in source
5	Neal Tapio	not in source	100.0%	seats not in source; one candidate
6	Ernie Otten	not in source	68.8%	seats not in source
7	Larry Tidemann	not in source	65.9%	seats not in source
8	Jordan Youngberg	not in source	50.4%	seats not in source
9	Deb Peters	not in source	65.4%	seats not in source
10	Jenna Haggar	not in source	60.0%	seats not in source
11	Jim Stalzer	not in source	60.8%	seats not in source
12	Blake Curd	not in source	58.4%	seats not in source
13	Jack Kolbeck	not in source	60.9%	seats not in source
14	Deb Soholt	not in source	68.7%	seats not in source
15	Reynold F. Nesiba	not in source	100.0%	seats not in source; one candidate
16	Jim Bolin	not in source	72.6%	seats not in source
17	Arthur Rusch	not in source	55.9%	seats not in source
18	Craig Kennedy	not in source	100.0%	seats not in source; one candidate
19	Stace Nelson	not in source	78.2%	seats not in source
20	Joshua Klumb	not in source	64.7%	seats not in source
21	Billie H. Sutton	not in source	100.0%	seats not in source; one candidate
22	Jim White	not in source	73.7%	seats not in source
23	Justin R Cronin	not in source	100.0%	seats not in source; one candidate
24	Jeff Monroe	not in source	100.0%	seats not in source; one candidate
25	Kris Langer	not in source	62.8%	seats not in source
26	Troy Heinert	not in source	100.0%	seats not in source; one candidate
27	Kevin Killer	not in source	100.0%	seats not in source; one candidate
28	Ryan M. Maher	not in source	100.0%	seats not in source; one candidate
29	Gary L. Cammack	not in source	65.0%	seats not in source
30	Lance Russell	not in source	71.5%	seats not in source
31	Bob Ewing	not in source	100.0%	seats not in source; one candidate
32	Alan D. Solano	not in source	66.8%	seats not in source
33	Phil Jensen	not in source	61.6%	seats not in source
34	Jeffrey D. Partridge	not in source	65.2%	seats not in source
35	Terri L. Haverly	not in source	100.0%	seats not in source; one candidate

MEDSL precinct returns 2016-2024: a fixed historic release; the file records no release date.

Sources

Current members: Open States (CC0 1.0), commit 3a1d876 of November 3, 2026; seat totals from openstates-metadata (MIT).

Seats after each election: Carl Klarner, State Legislative Election Returns, 1967-2022, Harvard Dataverse (CC0 1.0).

District results: MEDSL precinct returns (2018-2024 CC0 1.0; 2016 MIT License).

District lines: US Census Bureau, TIGER/Line cartographic boundaries (public domain), state legislative districts 2024, 1:500,000.

Data through November 3, 2026.