Indiana 66th 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
61.5%
8,838 votes · D+23.4 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 53.7%
Republican
Donald Trump2024
69.2%
23,353 votes · R+40.1 · modeled estimate
Runner-up · Donald Trump, 2020 · 67.8%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Barack Obama2008
10,084votes
39.2% of the vote · R+20.4 · modeled estimate
Runner-up · Kamala Harris, 2024 · 9,818 votes
Republican
Donald Trump2024
23,353votes
69.2% of the vote · R+40.1 · modeled estimate
Runner-up · Donald Trump, 2020 · 21,735 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
James M. Cox1920
+13.1pts D vs U.S.
Place R+13.1 · U.S. R+26.2 · modeled estimate
Runner-up · John W. Davis, 1924 · +10.6 pts
Republican
Donald Trump2020
+41.9pts R vs U.S.
Place R+37.5 · U.S. D+4.5 · modeled estimate
Runner-up · Donald Trump, 2016 · +40.5 pts
current representation
Current officeholders
RZach PayneState House · 66
State legislative officeholder from OpenStates nightly current-legislator data.
District 66 recorded a 40.1-point Republican presidential margin in 2024, placing it among Indiana's most heavily one-sided state house seats. Its population of roughly 68,000 reflects a typical rural or small-town Hoosier district profile.
Across the recorded series it reached a Democratic high of 25.9 points in 1912 and a Republican high of 40.1 points in 2024. Between 2020 and 2024 the district moved 2.7 points toward the Republican candidate; the 2024 margin was 40.1 points.
A population of 67,856, a 89% non-Hispanic-white share, and a median household income of $79,030 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 70 and State House District 65.
Akashic
Political twins — state-house districts
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.
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 → · Or open the source-auditable district brief for electoral baseline, electorate, current-cycle coverage, geography, official dates, and methodology. Open campaign intelligence report →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Indiana 66th State House District. Akashic. https://akashic.app/sld-lower/18066/. Accessed May 20, 2026. License: CC BY 4.0.
How did Indiana 66th State House District vote in 2024?
In 2024, Indiana 66th State House District voted Republican by 40.1 points (R+40.1), carried by the Republican candidate. Out of 33,738 votes cast, 9,818 went Democratic and 23,353 went Republican.
When did Indiana 66th State House District last vote Democratic?
The most recent presidential election in which Indiana 66th State House District voted Democratic was 1992.
How many people live in Indiana 66th State House District?
Indiana 66th State House District has a population of 67,856 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Indiana 66th State House District?
Median household income in Indiana 66th State House District is $79,030 — below the national median of $80,734. The Indiana state median is $71,957.
What is the political history of Indiana 66th State House District?
Akashic tracks 38 presidential elections in Indiana 66th State House District from 1876 to 2024. Of those, 8 went Democratic and 30 went Republican.