- Lead
- 1,799
- Total
- 11,511
- vs nation
- D+17.1
Iowa 29th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 3,002
- Total
- 12,534
- vs nation
- D+19.5
- Lead
- 2,638
- Total
- 11,283
- vs nation
- D+21.3
- Lead
- 3,018
- Total
- 11,154
- vs nation
- D+23.2
- Lead
- 2,838
- Total
- 10,480
- vs nation
- D+19.8
- Lead
- 1,774
- Total
- 9,749
- vs nation
- D+20.7
- Lead
- 1,568
- Total
- 8,410
- vs nation
- D+18.1
- Lead
- 2,030
- Total
- 7,633
- vs nation
- D+18.1
Key facts
- 2024 presidential margin
- D+15.6MIT Election Lab
- Population
- 31,8652024 5-year
- Population density
- 1,448 / sq mi2024 5-year · TIGER/Line
- Land area
- 22 sq miTIGER/Line
- Median household income
- $67,2142024 5-year
- White (non-Hispanic)
- 51.3%2024 5-year
- Black
- 10.2%2024 5-year
- Hispanic / Latino
- 22.8%2024 5-year
- Peak Democratic margin
- D+44.5 in 1964MIT Election Lab
- Peak Republican margin
- R+51.6 in 1904MIT Election Lab
- Most similar
- State House District 33, IA · twin score 95.8
presidential history
Party record book
Iowa 29th 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
Lyndon B. Johnson1964
72.0%
4,039 votes · D+44.5 · modeled estimate
Runner-up · Michael Dukakis, 1988 · 65.3%
Republican
Theodore Roosevelt1904
70.5%
574 votes · R+51.6 · modeled estimate
Runner-up · Herbert Hoover, 1928 · 61.8%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
7,632votes
60.9% of the vote · D+24.0 · modeled estimate
Runner-up · Barack Obama, 2012 · 6,993 votes
Republican
Donald Trump2024
4,779votes
41.5% of the vote · D+15.6 · modeled estimate
Runner-up · Donald Trump, 2020 · 4,630 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
Michael Dukakis1988
+38.8pts D vs U.S.
Place D+31.1 · U.S. R+7.7 · modeled estimate
Runner-up · Walter Mondale, 1984 · +34.1 pts
Republican
Theodore Roosevelt1904
+31.9pts R vs U.S.
Place R+51.6 · U.S. R+19.7 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · +19.8 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Iowa 29th State House District sits in the Corn Belt. In 2024 it voted Democratic.
Across the recorded series it reached a Democratic high of 44.5 points in 1964 and a Republican high of 51.6 points in 1904. Between 2020 and 2024 the district moved 8.3 points toward the Republican candidate; the 2024 margin was 15.6 points.
A population of 31,865, a 51% non-Hispanic-white share, and a median household income of $67,214 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 33 and State House District 67A.
The state-house districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
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 →
Iowa 29th State House District. Akashic. https://akashic.app/sld-lower/19029/. Accessed May 20, 2026. License: CC BY 4.0.