- Lead
- 952
- Total
- 31,768
- vs nation
- D+4.5
Iowa 36th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 3,003
- Total
- 33,252
- vs nation
- D+4.6
- Lead
- 2,912
- Total
- 31,710
- vs nation
- D+7.1
- Lead
- 8,294
- Total
- 32,569
- vs nation
- D+21.6
- Lead
- 9,691
- Total
- 30,993
- vs nation
- D+24.0
- Lead
- 7,383
- Total
- 30,011
- vs nation
- D+27.1
- Lead
- 6,396
- Total
- 25,965
- vs nation
- D+24.1
- Lead
- 7,073
- Total
- 24,580
- vs nation
- D+20.3
Key facts
- 2024 presidential margin
- D+3.0MIT Election Lab
- Population
- 64,2992024 5-year
- Population density
- 941 / sq mi2024 5-year · TIGER/Line
- Land area
- 68.3 sq miTIGER/Line
- Median household income
- $67,9522024 5-year
- White (non-Hispanic)
- 84.7%2024 5-year
- Black
- 5.8%2024 5-year
- Hispanic / Latino
- 3.5%2024 5-year
- Peak Democratic margin
- D+56.4 in 1932MIT Election Lab
- Peak Republican margin
- R+12.2 in 1920MIT Election Lab
- Most similar
- State Senate District 33, IA · twin score 80.5
presidential history
Party record book
Iowa 36th State Senate 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
78.2%
13,436 votes · D+56.4 · modeled estimate
Runner-up · Lyndon B. Johnson, 1964 · 74.6%
Republican
Warren G. Harding1920
53.5%
6,938 votes · R+12.2 · modeled estimate
Runner-up · Dwight D. Eisenhower, 1956 · 51.8%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Barack Obama2012
20,129votes
61.8% of the vote · D+25.5 · modeled estimate
Runner-up · Barack Obama, 2008 · 20,063 votes
Republican
Donald Trump2024
15,138votes
47.7% of the vote · D+3.0 · modeled estimate
Runner-up · Donald Trump, 2020 · 14,751 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
Al Smith1928
+60.2pts D vs U.S.
Place D+42.7 · U.S. R+17.5 · modeled estimate
Runner-up · Michael Dukakis, 1988 · +42.2 pts
Republican
Wendell Willkie1940
+1.6pts R vs U.S.
Place D+8.4 · U.S. D+9.9 · modeled estimate
Runner-up · Donald Trump, 2024 · −4.5 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
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.
Anchored in a dense urban core, this district delivered a 3.0-point Democratic presidential margin in 2024 — an outlier in a state that has trended sharply Republican statewide over the past decade.
Across the recorded series it reached a Democratic high of 56.4 points in 1932 and a Republican high of 12.2 points in 1920. Between 2020 and 2024 the district moved 6.0 points toward the Republican candidate; the 2024 margin was 3.0 points.
A population of 64,299, a 85% non-Hispanic-white share, and a median household income of $67,952 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 33 and State Senate District 37.
The state-senate 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 36th State Senate District. Akashic. https://akashic.app/sld-upper/19036/. Accessed May 20, 2026. License: CC BY 4.0.