Akashic
1892–2024
Akashic
Iowa 31st State House District
presidential margin
2008D+2.22012R+3.12016D+8.52020D+17.72024D+14.9
full record · 2008 → 2024
D+14.9
2024
median income$90,396U.S. $80,734 · IA $75,059
median age36.5U.S. 39.1 · IA 38.8
poverty rate7.3%U.S. 12.5% · IA 11.1%
bachelor’s+ (25+)40.4%U.S. 35.6% · IA 31.8%
non-english14.7%U.S. 22.3% · IA 9.2%
race · ethnicity · ancestry
German26.9%
Irish14.5%
English12.9%
Mexican4.1%
Salvadoran0.5%
Puerto Rican0.4%
African American†3.5%
Sudanese0.5%
Liberian0.5%
Burmese1.0%
Asian Indian0.9%
Vietnamese0.7%
religion

Religious adherence is published only at the county level (U.S. Religion Census). See Polk County.

American Community Survey 2024 5-year (income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024.

Iowa 31st State House District

Akashic
Iowa 31st State House DistrictHarrisD+14.9
2024
2024 presidential margin for Iowa 31st State House DistrictThe boundary of Iowa 31st State House District, filled by its 2024 presidential margin (D+14.9), over faint outlines of the counties it is drawn from.Iowa 31st State House District · D+14.9
How it voted
Share of the 2024 vote
Kamala Harris ✓Democratic56.6%10,609
Donald TrumpRepublican41.7%7,815
Robert F. Kennedy Jr.We The People1.7%326
D+60
R+60
District boundary, filled by its own 2024 D-vs-R margin — precinct detail where available, over the 2 counties it's drawn from (shown faint).
The precinct map shows the 2024 presidential vote; the timeline scrubs the district’s overall result across 1892–2024, on its current boundaries.
County-level results (2 counties) — table
2024 presidential result by county for Iowa 31st State House District — winner and D-vs-R margin.
CountyWinnerMargin
Dallas County, IARepublicanR+4.7
Polk County, IADemocraticD+10.8
5 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
YearWonDemocraticRepublicanOtherMarginTotal
D
56.6%Harris10,609
41.7%Trump7,815
1.7%Kennedy326
+14.9%
18,750
D
57.9%Biden11,173
40.2%Trump7,758
1.8%Jorgensen355
+17.7%
19,286
D
50.3%Clinton8,947
41.8%Trump7,438
7.9%Johnson1,414
+8.5%
17,799
R
48.4%Obama8,919
51.6%Romney9,494
0.0%
−3.1%
18,413
D
50.4%Obama8,655
48.2%McCain8,273
1.4%Nader249
+2.2%
17,177
presidential history
Presidential margin, 2008–2024
Democratic minus Republican, by election
Presidential margin over timeDemocratic-minus-Republican presidential margin from 2008 to 2024. Most recent: +14.9% in 2024.flipped D · 2016+14.9%DR20082024
Presidential margin over time
YearMargin (D minus R)
2008+2.2%
2012−3.1%
2016+8.5%
2020+17.7%
2024+14.9%
DemocraticRepublican
current representation
Current officeholders
DMary MadisonState House · 31

State legislative officeholder from OpenStates nightly current-legislator data.

Source · OpenStates current legislator CSV.

The district recorded a Democratic presidential margin of D+14.9 in 2024 and D+2.2 in 2008, switching sides at least once in between. The district had about 19,800 residents, 75.9% White alone in the 2024 ACS 5-year.

Across the recorded series it reached a Democratic high of 17.7 points in 2020 and a Republican high of 3.1 points in 2012. Between 2020 and 2024 the district moved 2.8 points toward the Republican candidate; the 2024 margin was 14.9 points.

A population of 32,047, a 80% non-Hispanic-white share, and a median household income of $90,396 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 44 and State House District 32.

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 44
Iowa
95.5twin score
12-yr trendmedian age% unaffiliated
State House District 32
Iowa
95.4twin score
12-yr trend2020–2024 trajectorymedian age
State House District 43
Iowa
93.5twin score
12-yr trendmedian age% 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.

Compare two places, side by side

Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →

Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Iowa 31st State House District. Akashic. https://akashic.app/sld-lower/19031/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Iowa at the ballot boxAll elections →
Presidentcounty detail2024US Senatestatewide2022Governorstate + county2022US Houseall districts2024

Frequently asked questions

How did Iowa 31st State House District vote in 2024?
In 2024, Iowa 31st State House District voted Democratic by 14.9 points (D+14.9), carried by the Democratic candidate. Out of 18,750 votes cast, 10,609 went Democratic and 7,815 went Republican.
When did Iowa 31st State House District last vote Republican?
The most recent presidential election in which Iowa 31st State House District voted Republican was 2012.
How many people live in Iowa 31st State House District?
Iowa 31st State House District has a population of 32,047 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Iowa 31st State House District?
Median household income in Iowa 31st State House District is $90,396 — above the national median of $80,734. The Iowa state median is $75,059.
What is the political history of Iowa 31st State House District?
Akashic tracks 5 presidential elections in Iowa 31st State House District from 2008 to 2024. Of those, 4 went Democratic and 1 went Republican.