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Akashic

state house district

Montana 31st State House District

Office (updates table and map)

President margin by year

Place winner margin

1896–2024 · D minus R

Full record · 1896 → 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

Turtle Mountain Chippewa0.9%——

Blackfeet0.7%1.0%—

Tohono O'odham0.4%——

German6.9%22.9%12.5%

Norwegian5.2%7.5%—

American3.5%5.4%5.3%

Irish3.3%13.5%9.4%

English2.6%13.1%9.5%

Swedish0.8%1.4%—

Scottish0.6%2.6%1.3%

French0.5%—1.6%

Mexican1.4%2.9%11.3%

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 HD 31	Montana	United States
Median age	31.7	40.8	39.1
Age 18–24	7.7%	9.1%	9.2%
Age 65 and older	18.6%	20.0%	17.2%

Household economy

Measure	MT HD 31	Montana	United States
Median household income	$53,108	$72,509	$84,427
Poverty rate	33.7%	11.5%	12.5%
Bachelor's degree or higher (25+)	23.6%	35.3%	35.6%

Housing and tenure

Measure	MT HD 31	Montana	United States
Owner-occupied homes	67.9%	69.2%	65.2%
Renter-occupied homes	32.1%	30.8%	34.8%
Median home value	$115,300	$375,800	$332,700
Median gross rent (monthly)	$647	$1,081	$1,413
Renters paying 30%+ of income	33.1%	44.8%	51.1%
Vacant housing units	26.1%	13.2%	10.1%

Getting to work

Measure	MT HD 31	Montana	United States
Mean commute	17.1 min	19.1 min	26.4 min
Commutes 60 minutes or more	2.4%	4.8%	8.6%
Drives alone to work	70.7%	71.1%	68.8%
Takes public transit	0.5%	0.6%	3.2%
Works from home	7.0%	12.5%	15.1%

Languages at home

Measure	MT HD 31	Montana	United States
Speaks a non-English language at home	2.2%	4.2%	22.3%

Religious landscape

Measure	MT HD 31	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 HD 31	Montana	United States
Foreign-born residents	1.1%	2.3%	14.1%
Naturalized citizens	0.2%	1.2%	7.4%
Not U.S. citizens	0.9%	1.1%	6.8%
Veterans (18+)	7.4%	9.0%	6.2%
Income inequality (Gini)	0.471	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

HarrisDemocratic49.1%1,821TrumpRepublican46.1%1,709OtherAll other candidates4.9%181

D+3.0

Lead: 112
Total: 3,711
vs nation: D+4.5

modeled Census-place estimatemodeled estimate

BidenDemocratic54.7%2,053TrumpRepublican42.7%1,602OtherAll other candidates2.7%101

D+12.0

Lead: 451
Total: 3,756
vs nation: D+7.6

modeled Census-place estimatemodeled estimate

ClintonDemocratic50.2%1,671TrumpRepublican41.1%1,367OtherAll other candidates8.7%289

D+9.1

Lead: 304
Total: 3,327
vs nation: D+7.0

modeled Census-place estimatemodeled estimate

ObamaDemocratic65.1%2,307RomneyRepublican33.6%1,189OtherAll other candidates1.3%46

D+31.6

Lead: 1,118
Total: 3,542
vs nation: D+27.7

modeled Census-place estimatemodeled estimate

ObamaDemocratic69.5%2,733McCainRepublican28.5%1,120OtherAll other candidates2.1%81

D+41.0

Lead: 1,613
Total: 3,934
vs nation: D+33.7

modeled Census-place estimatemodeled estimate

KerryDemocratic63.0%2,330BushRepublican35.8%1,323OtherAll other candidates1.2%46

D+27.2

Lead: 1,007
Total: 3,699
vs nation: D+29.7

modeled Census-place estimatemodeled estimate

GoreDemocratic61.8%2,205BushRepublican35.0%1,250OtherAll other candidates3.2%114

D+26.8

Lead: 955
Total: 3,569
vs nation: D+26.2

modeled Census-place estimatemodeled estimate

ClintonDemocratic60.0%2,381DoleRepublican24.2%961OtherAll other candidates15.8%626

D+35.8

Lead: 1,420
Total: 3,968
vs nation: D+27.3

modeled Census-place estimatemodeled estimate

Key facts

2024 presidential margin: D+3.0MIT Election Lab
Population: 10,3012024 5-year
Population density: 3.1 / sq mi2024 5-year · TIGER/Line
Land area: 3,322 sq miTIGER/Line
Median household income: $53,1082024 5-year
White (non-Hispanic): 24.8%2024 5-year
Black: 0.3%2024 5-year
Hispanic / Latino: 2.1%2024 5-year
Peak Democratic margin: D+69.8 in 1936MIT Election Lab
Peak Republican margin: R+16.4 in 1920MIT Election Lab
Most similar: State House District 42, MT · twin score 94.1

presidential history

Party record book

Montana 31st State House District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.

1896–2024 · 33 presidential cycles

Largest share of the presidential candidate vote cast here.

Democratic

Franklin D. Roosevelt1936

83.9%

4,178 votes · D+69.8 · modeled estimate

Runner-up · Franklin D. Roosevelt, 1940 · 74.5%

Republican

Warren G. Harding1920

54.9%

1,509 votes · R+16.4 · modeled estimate

Runner-up · Theodore Roosevelt, 1904 · 50.0%

Most votes

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

Democratic

Franklin D. Roosevelt1936

4,178votes

83.9% of the vote · D+69.8 · modeled estimate

Runner-up · Franklin D. Roosevelt, 1940 · 3,178 votes

Republican

Ronald Reagan1984

1,716votes

42.3% of the vote · D+14.3 · modeled estimate

Runner-up · Donald Trump, 2024 · 1,709 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

Woodrow Wilson1916

+47.1pts D vs U.S.

Place D+50.3 · U.S. D+3.1 · modeled estimate

Runner-up · Adlai Stevenson, 1956 · +46.7 pts

Republican

William H. Taft1912

−2.4pts R vs U.S.

Place D+21.9 · U.S. D+19.5 · a third-party candidate carried the Place · modeled estimate

Runner-up · Donald Trump, 2024 · −4.5 pts

current representation

Current officeholders

DFrank SmithState House · 31

State legislative officeholder from OpenStates nightly current-legislator data.

U.S. House elections · 1 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	43.2%1,743	56.8%2,291	4,034

Montana 31st State House District sits in the Northern Rockies. In 2024 it voted Democratic.

Across the recorded series it reached a Democratic high of 69.8 points in 1936 and a Republican high of 16.4 points in 1920. Between 2020 and 2024 the district moved 9.0 points toward the Republican candidate; the 2024 margin was 3.0 points.

A population of 10,301, a 25% non-Hispanic-white share, and a median household income of $53,108 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 42 and State House District 41.

Political twins — state-house districts

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

State House District 42

elasticity12-yr trend2008 margin

State House District 41

elasticity2008 margin% White≠ % Catholic

State House District 15

elasticity2008 marginpopulation scale

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 31st State House District. Akashic. https://akashic.app/sld-lower/30031/. 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 31st State House District

counties it covers3

Phillips County Roosevelt County Valley County

Frequently asked questions

How did Montana 31st State House District vote in 2024?

In 2024, Montana 31st State House District voted Democratic by 3.0 points (D+3.0), carried by the Democratic candidate. Out of 3,711 votes cast, 1,821 went Democratic and 1,709 went Republican.

When did Montana 31st State House District last vote Republican?

The most recent presidential election in which Montana 31st State House District voted Republican was 1920.

How many people live in Montana 31st State House District?

Montana 31st State House District has a population of 10,301 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.

What is the median household income in Montana 31st State House District?

Median household income in Montana 31st State House District is $53,108 — below the national median of $80,734. The Montana state median is $72,509.

What is the political history of Montana 31st State House District?

Akashic tracks 38 presidential elections in Montana 31st State House District from 1876 to 2024. Of those, 28 went Democratic and 3 went Republican.