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Akashic

state senate district

Idaho 31st 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

English31.5%19.3%9.5%

German15.0%16.5%12.5%

Irish7.5%9.5%9.4%

American6.1%5.3%5.3%

Scottish4.0%3.2%1.3%

Norwegian2.3%2.4%—

French2.2%—1.6%

Italian1.8%2.9%4.8%

Mexican8.2%11.0%11.3%

Puerto Rican0.4%0.3%1.8%

Chilean0.4%——

Venezuelan0.2%——

Spanish0.2%0.4%—

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	ID SD 31	Idaho	United States
Median age	37	37.6	39.1
Age 18–24	8.6%	9.8%	9.2%
Age 65 and older	16.4%	17.1%	17.2%

Household economy

Measure	ID SD 31	Idaho	United States
Median household income	$76,605	$77,800	$84,427
Poverty rate	10.3%	10.7%	12.5%
Bachelor's degree or higher (25+)	25.7%	31.8%	35.6%

Housing and tenure

Measure	ID SD 31	Idaho	United States
Owner-occupied homes	81.9%	72.1%	65.2%
Renter-occupied homes	18.1%	27.9%	34.8%
Median home value	$365,100	$418,600	$332,700
Median gross rent (monthly)	$971	$1,238	$1,413
Renters paying 30%+ of income	36.7%	46.9%	51.1%
Vacant housing units	24.8%	10.3%	10.1%

Getting to work

Measure	ID SD 31	Idaho	United States
Mean commute	23.6 min	21.6 min	26.4 min
Commutes 60 minutes or more	7.5%	5.1%	8.6%
Drives alone to work	75.3%	72.7%	68.8%
Takes public transit	1.3%	0.5%	3.2%
Works from home	9.2%	13.3%	15.1%

Languages at home

Measure	ID SD 31	Idaho	United States
Speaks a non-English language at home	9.9%	11.0%	22.3%
Spanish	8.6%	8.1%	13.6%

Religious landscape

Measure	ID SD 31	Idaho	United States
Catholic	—	11.1%	18.6%
Evangelical Protestant	—	12.4%	16.5%
Unclaimed / not counted	—	50.2%	51.5%

Origins and service

Measure	ID SD 31	Idaho	United States
Foreign-born residents	4.2%	5.9%	14.1%
Naturalized citizens	1.7%	2.7%	7.4%
Not U.S. citizens	2.5%	3.2%	6.8%
Veterans (18+)	6.1%	8.0%	6.2%
Income inequality (Gini)	0.415	0.444	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

HarrisDemocratic14.1%3,933TrumpRepublican83.1%23,122OtherAll other candidates2.8%766

R+69.0

Lead: 19,189
Total: 27,821
vs nation: R+67.5

modeled Census-place estimatemodeled estimate

BidenDemocratic14.4%3,732TrumpRepublican82.9%21,503OtherAll other candidates2.7%706

R+68.5

Lead: 17,771
Total: 25,941
vs nation: R+73.0

modeled Census-place estimatemodeled estimate

ClintonDemocratic11.1%2,404TrumpRepublican73.0%15,740OtherAll other candidates15.9%3,419

R+61.8

Lead: 12,321
Total: 21,563
vs nation: R+63.9

modeled Census-place estimatemodeled estimate

ObamaDemocratic14.5%3,139RomneyRepublican83.6%18,066OtherAll other candidates1.9%416

R+69.0

Lead: 14,927
Total: 21,621
vs nation: R+72.9

modeled Census-place estimatemodeled estimate

ObamaDemocratic18.4%3,831McCainRepublican79.2%16,483OtherAll other candidates2.3%488

R+60.8

Lead: 12,652
Total: 20,802
vs nation: R+68.1

modeled Census-place estimatemodeled estimate

KerryDemocratic14.6%2,786BushRepublican84.1%16,049OtherAll other candidates1.3%248

R+69.5

Lead: 13,263
Total: 19,083
vs nation: R+67.0

modeled Census-place estimatemodeled estimate

GoreDemocratic14.9%2,522BushRepublican82.0%13,892OtherAll other candidates3.1%533

R+67.1

Lead: 11,370
Total: 16,947
vs nation: R+67.6

modeled Census-place estimatemodeled estimate

ClintonDemocratic22.2%3,673DoleRepublican63.9%10,567OtherAll other candidates13.9%2,300

R+41.7

Lead: 6,894
Total: 16,540
vs nation: R+50.2

modeled Census-place estimatemodeled estimate

Key facts

2024 presidential margin: R+69.0MIT Election Lab
Population: 53,0432024 5-year
Population density: 5.7 / sq mi2024 5-year · TIGER/Line
Land area: 9,285 sq miTIGER/Line
Median household income: $76,6052024 5-year
White (non-Hispanic): 85.7%2024 5-year
Black: 0.2%2024 5-year
Hispanic / Latino: 10.2%2024 5-year
Peak Democratic margin: D+77.8 in 1896MIT Election Lab
Peak Republican margin: R+69.5 in 2004MIT Election Lab
Most similar: State Senate District 28, ID · twin score 96.9

presidential history

Party record book

Idaho 31st 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

88.9%

2,591 votes · D+77.8 · modeled estimate

Runner-up · Franklin D. Roosevelt, 1936 · 66.3%

Republican

George W. Bush2004

84.1%

16,049 votes · R+69.5 · modeled estimate

Runner-up · Mitt Romney, 2012 · 83.6%

Most votes

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

Democratic

Franklin D. Roosevelt1936

7,600votes

66.3% of the vote · D+34.1 · modeled estimate

Runner-up · Franklin D. Roosevelt, 1940 · 7,063 votes

Republican

Donald Trump2024

23,122votes

83.1% of the vote · R+69.0 · modeled estimate

Runner-up · Donald Trump, 2020 · 21,503 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

+83.9pts D vs U.S.

Place D+77.8 · U.S. R+6.1 · modeled estimate

Runner-up · Woodrow Wilson, 1916 · +18.8 pts

Republican

Donald Trump2020

+73.0pts R vs U.S.

Place R+68.5 · U.S. D+4.5 · modeled estimate

Runner-up · Mitt Romney, 2012 · +72.9 pts

current representation

Current officeholders

RVan BurtenshawState Senate · 31

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	12.0%3,135	88.0%22,973	26,108
2020	R	13.3%2,477	86.7%16,112	18,589
2018	R	16.4%2,610	83.6%13,278	15,888

With a 2024 presidential margin of R+68.9, this rural district ranks among the most one-sided in the state, where general-election outcomes are largely decided in the Republican primary.

Across the recorded series it reached a Democratic high of 77.8 points in 1896 and a Republican high of 69.5 points in 2004. The 2024 margin was 69.0 points.

A population of 53,043, a 86% non-Hispanic-white share, and a median household income of $76,605 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 28 and State Senate District 27.

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 28

2008–2024 trajectory≠ % unaffiliated

State Senate District 27

2008–2024 trajectory

State Senate District 35

2008–2020 trajectoryelasticity≠ % unaffiliated

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.

Idaho 31st State Senate District. Akashic. https://akashic.app/sld-upper/16031/. Accessed May 20, 2026. License: CC BY 4.0.

License: CC BY 4.0

Idaho at the ballot boxAll elections →

Presidentcounty detail2024 US Senatestatewide2022 Governorstate + county2022 US Houseall districts2024

Places within Idaho 31st State Senate District

counties it covers4

Clark County Fremont County Jefferson County Lemhi County

Frequently asked questions

How did Idaho 31st State Senate District vote in 2024?

In 2024, Idaho 31st State Senate District voted Republican by 69.0 points (R+69.0), carried by the Republican candidate. Out of 27,821 votes cast, 3,933 went Democratic and 23,122 went Republican.

When did Idaho 31st State Senate District last vote Democratic?

The most recent presidential election in which Idaho 31st State Senate District voted Democratic was 1948.

How many people live in Idaho 31st State Senate District?

Idaho 31st State Senate District has a population of 53,043 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.

What is the median household income in Idaho 31st State Senate District?

Median household income in Idaho 31st State Senate District is $76,605 — below the national median of $80,734. The Idaho state median is $77,800.

What is the political history of Idaho 31st State Senate District?

Akashic tracks 38 presidential elections in Idaho 31st State Senate District from 1876 to 2024. Of those, 8 went Democratic and 26 went Republican.