- Lead
- 5,127
- Total
- 10,874
- vs nation
- D+48.6
Iowa 34th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 6,440
- Total
- 12,212
- vs nation
- D+48.3
- Lead
- 6,509
- Total
- 12,422
- vs nation
- D+50.3
- Lead
- 7,141
- Total
- 12,290
- vs nation
- D+54.2
- Lead
- 6,651
- Total
- 11,631
- vs nation
- D+49.9
- Lead
- 5,399
- Total
- 10,355
- vs nation
- D+54.6
- Lead
- 4,585
- Total
- 9,025
- vs nation
- D+50.3
- Lead
- 4,667
- Total
- 8,490
- vs nation
- D+46.4
Key facts
- 2024 presidential margin
- D+47.1MIT Election Lab
- Population
- 31,8862024 5-year
- Population density
- 4,906 / sq mi2024 5-year · TIGER/Line
- Land area
- 6.5 sq miTIGER/Line
- Median household income
- $54,5762024 5-year
- White (non-Hispanic)
- 47.6%2024 5-year
- Black
- 21.9%2024 5-year
- Hispanic / Latino
- 16.5%2024 5-year
- Peak Democratic margin
- D+70.4 in 1964MIT Election Lab
- Peak Republican margin
- R+17.9 in 1924MIT Election Lab
- Most similar
- State House District 65A, MN · twin score 94.2
presidential history
Party record book
Iowa 34th 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
85.0%
5,528 votes · D+70.4 · modeled estimate
Runner-up · Michael Dukakis, 1988 · 80.5%
Republican
Theodore Roosevelt1904
48.9%
341 votes · R+15.5 · modeled estimate
Runner-up · Herbert Hoover, 1928 · 41.9%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Barack Obama2012
9,584votes
78.0% of the vote · D+58.1 · modeled estimate
Runner-up · Joe Biden, 2020 · 9,171 votes
Republican
Donald Trump2024
2,742votes
25.2% of the vote · D+47.1 · modeled estimate
Runner-up · Donald Trump, 2020 · 2,731 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
+69.2pts D vs U.S.
Place D+61.5 · U.S. R+7.7 · modeled estimate
Runner-up · Walter Mondale, 1984 · +67.7 pts
Republican
Theodore Roosevelt1904
−4.2pts R vs U.S.
Place R+15.5 · U.S. R+19.7 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · −7.3 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
With a 2024 presidential margin of D+47.1, this district ranks among the most reliably Democratic constituencies in Iowa, likely anchored by a dense urban core or university population that drives its outsized partisan lean.
Across the recorded series it reached a Democratic high of 70.4 points in 1964 and a Republican high of 17.9 points in 1924. Between 2020 and 2024 the district moved 5.6 points toward the Republican candidate; the 2024 margin was 47.1 points.
A population of 31,886, a 48% non-Hispanic-white share, and a median household income of $54,576 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 65A and State House District 181.
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 34th State House District. Akashic. https://akashic.app/sld-lower/19034/. Accessed May 20, 2026. License: CC BY 4.0.