Montana Senate: Party Control and History

Current seats

Republican majorityDemocrats 18, Republicans 32. 50 seats; 26 for a majority.

Democrats 18Republicans 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.

Montana overviewMontana House

District map

Democrat 18Republican 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

No majority line: the chamber changed size (50 to 55 seats).

Seats by election, table

Year	D	R	Other	Seats	Control
2022	16	34	0	50	Republican majority
2020	19	31	0	50	Republican majority
2018	20	30	0	50	Republican majority
2016	18	32	0	50	Republican majority
2014	21	29	0	50	Republican majority
2012	21	29	0	50	Republican majority
2010	22	28	0	50	Republican majority
2008	23	27	0	50	Republican majority
2006	25	25	0	50	Tied
2004	27	23	0	50	Democratic majority
2002	21	29	0	50	Republican majority
2000	19	31	0	50	Republican majority
1998	18	32	0	50	Republican majority
1996	16	34	0	50	Republican majority
1994	18	32	0	50	Republican majority
1992	29	21	0	50	Democratic majority
1990	29	21	0	50	Democratic majority
1988	23	27	0	50	Republican majority
1986	25	25	0	50	Tied
1984	28	22	0	50	Democratic majority
1982	24	26	0	50	Republican majority
1980	22	28	0	50	Republican majority
1978	24	26	0	50	Republican majority
1976	25	25	0	50	Tied
1974	30	20	0	50	Democratic majority
1972	27	23	0	50	Democratic majority
1970	30	25	0	55	Democratic majority
1968	Not available

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: 25 contests

Incomplete in the source: counties in the file with no rows for this chamber (uncontested seats left off the ballot, or missing data).

District	Most votes	Party	Share	Note
2	DAVE FERN	Democrat	52.4%
3	CARL GLIMM	Republican	70.0%
5	MATT REGIER	Republican	74.3%
7	GREG HERTZ	Republican	72.8%
13	JOSH KASSMIER	Republican	100.0%	one candidate
15	GREGG HUNTER	Republican	100.0%	one candidate
16	JONATHAN WINDY BOY	Democrat	61.1%
17	BOB PHALEN	Republican	100.0%	one candidate
20	SUE VINTON	Republican	70.6%
21	GAYLE GEORGE LAMMERS	Republican	56.8%
24	MIKE YAKAWICH	Republican	53.8%
26	TOM MCGILLVRAY	Republican	63.9%
27	VINCE RICCI	Republican	74.2%
30	CORA NEUMANN	Democrat	58.4%
33	CHRISTOPHER POPE	Democrat	56.6%
35	TONY TEZAK	Republican	100.0%	one candidate
36	SARA NOVAK	Democrat	62.4%
37	DEREK J HARVEY	Democrat	59.8%
38	BECKY BEARD	Republican	72.5%
39	E WYLIE GALT	Republican	78.1%
40	LAURA SMITH	Democrat	53.7%
44	THERESA MANZELLA	Republican	71.8%
45	DENLEY M LOGE	Republican	59.0%
46	JACINDA MORIGEAU	Democrat	58.2%
47	ELLIE HILL BOLDMAN	Democrat	58.9%

2022: 27 contests

Incomplete in the source: counties in the file with no rows for this chamber (uncontested seats left off the ballot, or missing data).

District	Most votes	Party	Share	Note
1	MICHAEL J CUFFE	Republican	100.0%	one candidate
4	JOHN FULLER	Republican	62.2%
5	MARK NOLAND	Republican	100.0%	one candidate
8	SUSAN A WEBBER	Democrat	57.3%
9	BRUCE "BUTCH" GILLESPIE	Republican	100.0%	one candidate
11	DANIEL EMRICH	Republican	52.9%
12	WENDY MCKAMEY	Republican	56.0%
13	JEREMY TREBAS	Republican	51.7%
14	RUSSEL E TEMPEL	Republican	71.6%
15	DAN BARTEL	Republican	79.9%
19	KENNETH BOGNER	Republican	100.0%	one candidate
20	BARRY USHER	Republican	100.0%	one candidate
22	DANIEL ZOLNIKOV	Republican	65.7%
24	KATHY KELKER	Democrat	56.0%
27	DENNIS LENZ	Republican	100.0%	one candidate
29	FORREST JAMES MANDEVILLE	Republican	100.0%	one candidate
30	JOHN ESP	Republican	55.3%
32	PAT FLOWERS	Democrat	52.3%
33	DENISE HAYMAN	Democrat	67.9%
34	SHELLEY VANCE	Republican	63.9%
39	TERRY VERMEIRE	Republican	54.7%
41	JANET ELLIS	Democrat	55.4%
42	MARY ANN DUNWELL	Democrat	55.3%
43	JASON W ELLSWORTH	Republican	67.6%
48	SHANE A MORIGEAU	Democrat	63.9%
49	WILLIS CURDY	Democrat	54.4%
50	ANDREA OLSEN	Democrat	72.6%

2020: 25 contests

Incomplete in the source: counties in the file with no rows for this chamber (uncontested seats left off the ballot, or missing data).

District	Most votes	Party	Share	Note
2	CARL GLIMM	Republican	68.3%
3	KEITH REGIER	Republican	55.9%
6	GREG HERTZ	Republican	100.0%	one candidate
7	BOB BROWN	Republican	75.0%
10	STEVE FITZPATRICK	Republican	100.0%	one candidate
15	RYAN OSMUNDSON	Republican	100.0%	one candidate
16	MIKE FOX	Democrat	100.0%	one candidate
17	MIKE LANG	Republican	100.0%	one candidate
18	STEVE HINEBAUCH	Republican	78.4%
21	JASON D SMALL	Republican	57.8%
23	TOM MCGILLVRAY	Republican	100.0%	one candidate
25	JEN GROSS	Democrat	51.5%
26	CHRIS FRIEDEL	Republican	52.5%
28	BRAD MOLNAR	Republican	100.0%	one candidate
31	CHRISTOPHER POPE	Democrat	66.3%
35	WALT SALES	Republican	100.0%	one candidate
36	JEFF WELBORN	Republican	79.5%
37	RYAN LYNCH	Democrat	64.8%
38	EDITH "EDIE" MCCLAFFERTY	Democrat	50.2%
39	MARK SWEENEY	Democrat	50.8%
40	TERRY J GAUTHIER	Republican	60.5%
44	THERESA MANZELLA	Republican	67.2%
45	ELLIE HILL	Democrat	61.1%
46	SHANNON OBRIEN	Democrat	66.1%
47	DAN SALOMON	Republican	52.1%

2018: 25 contests

Incomplete in the source: counties in the file with no rows for this chamber (uncontested seats left off the ballot, or missing data).

District	Most votes	Party	Share	Note
1	MIKE CUFFE	Republican	83.2%
4	MARK W BLASDEL	Republican	64.5%
5	BOB KEENAN	Republican	100.0%	one candidate
8	SUSAN A WEBBER	Democrat	100.0%	one candidate
9	BRUCE "BUTCH" GILLESPIE	Republican	73.2%
11	TOM JACOBSON	Democrat	57.5%
12	CARLIE BOLAND	Democrat	51.5%
13	BRIAN HOVEN	Republican	53.2%
14	RUSSEL E TEMPEL	Republican	50.7%
19	KENNETH BOGNER	Republican	80.8%
20	DUANE ANKNEY	Republican	100.0%	one candidate
22	DOUGLAS "DOUG" KARY	Republican	60.5%
24	MARY MCNALLY	Democrat	54.0%
27	CARY L SMITH	Republican	68.1%
29	DAVID HOWARD	Republican	66.8%
30	JOHN ESP	Republican	53.2%
32	PAT FLOWERS	Democrat	50.4%
33	JENNIFER "JP" POMNICHOWSKI	Democrat	100.0%	one candidate
34	GORDON "GORDY" VANCE	Republican	64.8%
41	JANET ELLIS	Democrat	57.8%
42	JILL COHENOUR	Democrat	57.1%
43	JASON W ELLSWORTH	Republican	62.1%
48	NATE MCCONNELL	Democrat	62.8%
49	DIANE SANDS	Democrat	51.6%
50	BRYCE BENNETT	Democrat	72.2%

2016: 25 contests

Incomplete in the source: counties in the file with no rows for this chamber (uncontested seats left off the ballot, or missing data).

District	Most votes	Party	Share	Note
2	DEE L. BROWN	not in source	100.0%	seats not in source; one candidate
3	KEITH REGIER	not in source	56.8%	seats not in source
6	ALBERT D OLSZEWSKI	not in source	72.0%	seats not in source
7	JENNIFER FIELDER	not in source	67.2%	seats not in source
10	STEVE FITZPATRICK	not in source	77.0%	seats not in source
15	RYAN OSMUNDSON	not in source	76.8%	seats not in source
16	FRANK J. SMITH	not in source	57.4%	seats not in source
17	MIKE L LANG	not in source	77.7%	seats not in source
18	STEVE HINEBAUCH	not in source	100.0%	seats not in source; one candidate
21	JASON D. SMALL	not in source	51.5%	seats not in source
23	ROGER WEBB	not in source	66.2%	seats not in source
25	JEN GROSS	not in source	50.7%	seats not in source
26	DONALD ROBERTS	not in source	52.7%	seats not in source
28	TOM RICHMOND	not in source	66.9%	seats not in source
31	MIKE PHILLIPS	not in source	100.0%	seats not in source; one candidate
35	SCOTT SALES	not in source	100.0%	seats not in source; one candidate
36	JEFF WELBORN	not in source	100.0%	seats not in source; one candidate
37	JON C. SESSO	not in source	100.0%	seats not in source; one candidate
38	EDITH (EDIE) MCCLAFFERTY	not in source	53.5%	seats not in source
39	GENE VUCKOVICH	not in source	53.2%	seats not in source
40	TERRY J. GAUTHIER	not in source	52.7%	seats not in source
44	FRED THOMAS	not in source	70.0%	seats not in source
45	DICK BARRETT	not in source	64.8%	seats not in source
46	SUE MALEK	not in source	64.8%	seats not in source
47	DANIEL R. SALOMON	not in source	52.1%	seats not in source

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.