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state senate district

Montana 42nd State Senate District

Office (updates table and map)

President margin by year

Place winner margin

1892–2024 · D minus R

Full record · 1892 → 2024

2024

Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab

The precinct map shows the 2024 presidential vote; the timeline scrubs the district’s overall result across 1892–2024, on its current boundaries.

People and households

Who lives here

Exact values for this place, its state, and the United States.

Race · ethnicity · ancestry

Communities and origins

German23.6%22.9%12.5%

Irish16.0%13.5%9.4%

English15.5%13.1%9.5%

Norwegian6.6%7.5%—

American5.9%5.4%5.3%

Italian3.6%3.2%4.8%

Swedish3.6%1.4%—

French3.1%—1.6%

Mexican2.2%2.9%11.3%

Spanish0.5%0.3%—

Puerto Rican0.4%0.2%1.8%

Spaniard0.2%0.3%—

Blackfeet0.3%1.0%—

Turtle Mountain Chippewa0.3%——

Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.

Age and life stage

Measure	MT SD 42	Montana	United States
Median age	43.2	40.8	39.1
Age 18–24	7.5%	9.1%	9.2%
Age 65 and older	20.0%	20.0%	17.2%

Household economy

Measure	MT SD 42	Montana	United States
Median household income	$88,183	$72,509	$84,427
Poverty rate	6.4%	11.5%	12.5%
Bachelor's degree or higher (25+)	43.0%	35.3%	35.6%

Housing and tenure

Measure	MT SD 42	Montana	United States
Owner-occupied homes	78.3%	69.2%	65.2%
Renter-occupied homes	21.7%	30.8%	34.8%
Median home value	$421,200	$375,800	$332,700
Median gross rent (monthly)	$1,112	$1,081	$1,413
Renters paying 30%+ of income	60.6%	44.8%	51.1%
Vacant housing units	6.9%	13.2%	10.1%

Getting to work

Measure	MT SD 42	Montana	United States
Mean commute	20.8 min	19.1 min	26.4 min
Commutes 60 minutes or more	5.5%	4.8%	8.6%
Drives alone to work	69.2%	71.1%	68.8%
Takes public transit	0.5%	0.6%	3.2%
Works from home	13.3%	12.5%	15.1%

Languages at home

Measure	MT SD 42	Montana	United States
Speaks a non-English language at home	2.8%	4.2%	22.3%

Religious landscape

Measure	MT SD 42	Montana	United States
Catholic	—	10.3%	18.6%
Evangelical Protestant	—	13.6%	16.5%
Unclaimed / not counted	—	65.3%	51.5%

Origins and service

Measure	MT SD 42	Montana	United States
Foreign-born residents	2.2%	2.3%	14.1%
Naturalized citizens	1.7%	1.2%	7.4%
Not U.S. citizens	0.5%	1.1%	6.8%
Veterans (18+)	11.1%	9.0%	6.2%
Income inequality (Gini)	0.438	0.465	0.483

American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations · American Community Survey 2024 — housing and tenure (B25003, B25002, B25077, B25064, B25070), commuting (B08013, B08303, B08301), origins and service (B05002, B21001, B19083).

President results by year

Modeled candidate-vote estimate on current district boundaries

HarrisDemocratic41.9%5,769TrumpRepublican55.0%7,565OtherAll other candidates3.1%426

R+13.1

Lead: 1,796
Total: 13,760
vs nation: R+11.6

modeled Census-place estimatemodeled estimate

BidenDemocratic41.8%5,488TrumpRepublican54.9%7,204OtherAll other candidates3.4%440

R+13.1

Lead: 1,716
Total: 13,132
vs nation: R+17.5

modeled Census-place estimatemodeled estimate

ClintonDemocratic37.4%3,925TrumpRepublican51.6%5,422OtherAll other candidates11.0%1,158

R+14.3

Lead: 1,497
Total: 10,505
vs nation: R+16.3

modeled Census-place estimatemodeled estimate

ObamaDemocratic42.7%4,218RomneyRepublican54.6%5,387OtherAll other candidates2.7%267

R+11.8

Lead: 1,169
Total: 9,872
vs nation: R+15.7

modeled Census-place estimatemodeled estimate

ObamaDemocratic47.7%4,619McCainRepublican49.5%4,791OtherAll other candidates2.9%278

R+1.8

Lead: 172
Total: 9,688
vs nation: R+9.0

modeled Census-place estimatemodeled estimate

KerryDemocratic39.0%3,476BushRepublican59.1%5,273OtherAll other candidates2.0%174

R+20.1

Lead: 1,797
Total: 8,923
vs nation: R+17.7

modeled Census-place estimatemodeled estimate

GoreDemocratic32.9%2,680BushRepublican59.2%4,820OtherAll other candidates8.0%648

R+26.3

Lead: 2,140
Total: 8,148
vs nation: R+26.8

modeled Census-place estimatemodeled estimate

ClintonDemocratic39.9%3,143DoleRepublican47.7%3,757OtherAll other candidates12.5%984

R+7.8

Lead: 614
Total: 7,884
vs nation: R+16.3

modeled Census-place estimatemodeled estimate

Key facts

2024 presidential margin: R+13.1MIT Election Lab
Population: 21,6302024 5-year
Population density: 60 / sq mi2024 5-year · TIGER/Line
Land area: 358 sq miTIGER/Line
Median household income: $88,1832024 5-year
White (non-Hispanic): 87.8%2024 5-year
Black: 0.2%2024 5-year
Hispanic / Latino: 3.6%2024 5-year
Peak Democratic margin: D+53.2 in 1896MIT Election Lab
Peak Republican margin: R+37.9 in 1920MIT Election Lab
Most similar: State Senate District 41, MT · twin score 84.5

presidential history

Party record book

Montana 42nd State Senate District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.

1892–2024 · 34 presidential cycles

Largest share of the presidential candidate vote cast here.

Democratic

William J. Bryan1896

76.6%

1,116 votes · D+53.2 · modeled estimate

Runner-up · Franklin D. Roosevelt, 1936 · 60.9%

Republican

Dwight D. Eisenhower1956

67.9%

2,545 votes · R+35.8 · modeled estimate

Runner-up · Warren G. Harding, 1920 · 67.6%

Most votes

Largest number of votes cast for the party’s presidential nominee here.

Democratic

Kamala Harris2024

5,769votes

41.9% of the vote · R+13.1 · modeled estimate

Runner-up · Joe Biden, 2020 · 5,488 votes

Republican

Donald Trump2024

7,565votes

55.0% of the vote · R+13.1 · modeled estimate

Runner-up · Donald Trump, 2020 · 7,204 votes

Best relative to the U.S.

This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.

Democratic

William J. Bryan1896

+59.3pts D vs U.S.

Place D+53.2 · U.S. R+6.1 · modeled estimate

Runner-up · William J. Bryan, 1900 · +15.1 pts

Republican

George W. Bush2000

+26.8pts R vs U.S.

Place R+26.3 · U.S. D+0.5 · modeled estimate

Runner-up · Richard Nixon, 1968 · +25.4 pts

current representation

Current officeholders

DMary Ann DunwellState Senate · 42

State legislative officeholder from OpenStates nightly current-legislator data.

U.S. House elections · 3 House

Senate and governor results are in the Office selector at the top of this page.

U.S. House

Each row is a county-allocated estimate of U.S. House votes for this district — county returns apportioned onto its boundary, not precinct-counted. “Vote lead” is the estimated local lead here, not necessarily the winner of the full contest.

Source · Akashic county-allocated estimate from certified county returns, House; not precinct-counted.
Year	Vote lead	Democratic	Republican	Total
2024	R	45.9%5,549	54.1%6,553	12,102
2020	D	50.0%6,198	50.0%6,196	12,394
2018	D	54.5%5,535	45.5%4,618	10,153

Montana 42nd State Senate District sits in the Northern Rockies. In 2024 it voted Republican.

Across the recorded series it reached a Democratic high of 53.2 points in 1896 and a Republican high of 37.9 points in 1920. The 2024 margin was 13.1 points.

A population of 21,630, a 88% non-Hispanic-white share, and a median household income of $88,183 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 41 and State Senate District 45.

Political twins — state-senate districts

The state-senate districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.

State Senate District 41

population scale% unaffiliated% White

State Senate District 45

population scale% White% unaffiliated≠ Scottish ancestry

State Senate District 40

population scale% unaffiliated% White

Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.

District research tools

Open the source-auditable district brief for electoral baseline, electorate, current-cycle coverage, geography, official dates, and methodology. Open campaign intelligence report → · Browse all comparisons →

Cite this page

All citations released under CC BY 4.0. Attribution: Akashic Intelligence.

Montana 42nd State Senate District. Akashic. https://akashic.app/sld-upper/30042/. Accessed May 20, 2026. License: CC BY 4.0.

License: CC BY 4.0

Montana at the ballot boxAll elections →

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Places within Montana 42nd State Senate District

counties it covers1

Lewis and Clark County

Frequently asked questions

How did Montana 42nd State Senate District vote in 2024?

In 2024, Montana 42nd State Senate District voted Republican by 13.1 points (R+13.1), carried by the Republican candidate. Out of 13,760 votes cast, 5,769 went Democratic and 7,565 went Republican.

When did Montana 42nd State Senate District last vote Democratic?

The most recent presidential election in which Montana 42nd State Senate District voted Democratic was 1992.

How many people live in Montana 42nd State Senate District?

Montana 42nd State Senate District has a population of 21,630 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.

What is the median household income in Montana 42nd State Senate District?

Median household income in Montana 42nd State Senate District is $88,183 — above the national median of $80,734. The Montana state median is $72,509.

What is the political history of Montana 42nd State Senate District?

Akashic tracks 38 presidential elections in Montana 42nd State Senate District from 1876 to 2024. Of those, 8 went Democratic and 25 went Republican.