HarrisDemocratic31.6%6,095TrumpRepublican66.7%12,855OtherAll other candidates1.7%332
R+35.1- Lead
- 6,760
- Total
- 19,282
- vs nation
- R+33.6
modeled Census-place estimatemodeled estimate
Akashicstate house district
Iowa 15th State House District
Office (updates table and map)
President margin by year
Place winner margin
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.
President results by year
Modeled candidate-vote estimate on current district boundaries
BidenDemocratic32.8%6,411TrumpRepublican65.6%12,802OtherAll other candidates1.6%313
R+32.7- Lead
- 6,391
- Total
- 19,526
- vs nation
- R+37.2
modeled Census-place estimatemodeled estimate
ClintonDemocratic29.3%5,196TrumpRepublican64.3%11,401OtherAll other candidates6.4%1,136
R+35.0- Lead
- 6,205
- Total
- 17,733
- vs nation
- R+37.1
modeled Census-place estimatemodeled estimate
ObamaDemocratic40.9%7,053RomneyRepublican57.2%9,864OtherAll other candidates1.8%316
R+16.3- Lead
- 2,811
- Total
- 17,233
- vs nation
- R+20.2
modeled Census-place estimatemodeled estimate
ObamaDemocratic43.9%7,681McCainRepublican54.7%9,562OtherAll other candidates1.4%241
R+10.8- Lead
- 1,881
- Total
- 17,484
- vs nation
- R+18.0
modeled Census-place estimatemodeled estimate
KerryDemocratic35.5%6,278BushRepublican63.5%11,222OtherAll other candidates0.9%166
R+28.0- Lead
- 4,944
- Total
- 17,666
- vs nation
- R+25.5
modeled Census-place estimatemodeled estimate
GoreDemocratic37.4%5,491BushRepublican59.9%8,796OtherAll other candidates2.7%392
R+22.5- Lead
- 3,305
- Total
- 14,679
- vs nation
- R+23.0
modeled Census-place estimatemodeled estimate
ClintonDemocratic37.1%5,223DoleRepublican51.3%7,222OtherAll other candidates11.7%1,646
R+14.2- Lead
- 1,999
- Total
- 14,091
- vs nation
- R+22.7
modeled Census-place estimatemodeled estimate
Key facts
- 2024 presidential margin
- R+35.1MIT Election Lab
- Population
- 31,7402024 5-year
- Population density
- 33 / sq mi2024 5-year · TIGER/Line
- Land area
- 969 sq miTIGER/Line
- Median household income
- $93,0962024 5-year
- White (non-Hispanic)
- 94.4%2024 5-year
- Black
- 0.2%2024 5-year
- Hispanic / Latino
- 2.2%2024 5-year
- Peak Democratic margin
- D+28.0 in 1932MIT Election Lab
- Peak Republican margin
- R+42.1 in 1972MIT Election Lab
- Most similar
- State House District 16, IA · twin score 98.0
presidential history
Party record book
Iowa 15th State House District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 (partial returns from 1876) · 38 presidential cycles · 38 with a vote-share denominator · 34 with a national benchmark
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Franklin D. Roosevelt1932
64.0%
10,740 votes · D+28.0 · modeled estimate
Runner-up · Lyndon B. Johnson, 1964 · 53.6%
Republican
Richard Nixon1972
70.3%
9,966 votes · R+42.1 · modeled estimate
Runner-up · Donald Trump, 2024 · 66.7%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Franklin D. Roosevelt1932
10,740votes
64.0% of the vote · D+28.0 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 9,449 votes
Republican
Donald Trump2024
12,855votes
66.7% of the vote · R+35.1 · modeled estimate
Runner-up · Donald Trump, 2020 · 12,802 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
Franklin D. Roosevelt1932
+10.2pts D vs U.S.
Place D+28.0 · U.S. D+17.8 · modeled estimate
Runner-up · William J. Bryan, 1896 · +4.9 pts
Republican
Donald Trump2020
+37.2pts R vs U.S.
Place R+32.7 · U.S. D+4.5 · modeled estimate
Runner-up · Donald Trump, 2016 · +37.1 pts
current representation
Current officeholders
RMatt WindschitlState House · 15
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.
In 2024 it voted Republican by R+35.1, against R+10.8 in 2008. About 41,800 residents lived here, with White alone at 89.9% in the 2024 ACS 5-year.
Across the recorded series it reached a Democratic high of 28.0 points in 1932 and a Republican high of 42.1 points in 1972. Between 2020 and 2024 the district moved 2.3 points toward the Republican candidate; the 2024 margin was 35.1 points.
A population of 31,740, a 94% non-Hispanic-white share, and a median household income of $93,096 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 16 and State House District 42.
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 16
Iowa
98.0twin score
2016–2024 trajectory12-yr trend
State House District 42
Missouri
92.3twin score
2016–2024 trajectory12-yr trend
State House District 68
Indiana
90.8twin score
2016–2024 trajectory12-yr trend≠ Scottish ancestry
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.
Iowa 15th State House District. Akashic. https://akashic.app/sld-lower/19015/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Iowa at the ballot boxAll elections →
Places within Iowa 15th State House District
counties it covers2
Frequently asked questions
How did Iowa 15th State House District vote in 2024?
In 2024, Iowa 15th State House District voted Republican by 35.1 points (R+35.1), carried by the Republican candidate. Out of 19,282 votes cast, 6,095 went Democratic and 12,855 went Republican.
When did Iowa 15th State House District last vote Democratic?
The most recent presidential election in which Iowa 15th State House District voted Democratic was 1964.
How many people live in Iowa 15th State House District?
Iowa 15th State House District has a population of 31,740 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Iowa 15th State House District?
Median household income in Iowa 15th State House District is $93,096 — above the national median of $80,734. The Iowa state median is $75,059.
What is the political history of Iowa 15th State House District?
Akashic tracks 38 presidential elections in Iowa 15th State House District from 1876 to 2024. Of those, 4 went Democratic and 34 went Republican.