Missouri 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
Winfield S. Hancock1880
92.9%
118 votes · D+85.8 · modeled estimate
Runner-up · Grover Cleveland, 1884 · 91.7%
Republican
George H. W. Bush1988
18.7%
2,154 votes · D+62.6 · modeled estimate
Runner-up · Ronald Reagan, 1984 · 14.9%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Barack Obama2008
14,421votes
88.8% of the vote · D+78.0 · modeled estimate
Runner-up · Barack Obama, 2012 · 12,876 votes
Republican
Ronald Reagan1984
2,549votes
14.9% of the vote · D+28.9 · modeled estimate
Runner-up · Richard Nixon, 1972 · 2,156 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
John Kerry2004
+75.9pts D vs U.S.
Place D+73.4 · U.S. R+2.5 · modeled estimate
Runner-up · Kamala Harris, 2024 · +75.6 pts
Republican
William H. Taft1912
−22.2pts R vs U.S.
Place D+41.7 · U.S. D+19.5 · a third-party candidate carried the Place · modeled estimate
Runner-up · Alf Landon, 1936 · −26.6 pts
current representation
Current officeholders
DMarlene TerryState House · 66
State legislative officeholder from OpenStates nightly current-legislator data.
With a 2024 presidential margin of D+74.2, this St. Louis-area district ranks among the most reliably Democratic state house seats in Missouri, reflecting dense urban settlement and a heavily minority population.
Across the recorded series it reached a Democratic high of 85.8 points in 1880. Between 2020 and 2024 the district moved 2.4 points toward the Republican candidate; the 2024 margin was 74.2 points.
A population of 36,683, a 12% non-Hispanic-white share, and a median household income of $47,778 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 74 and State House District 73.
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.
Missouri 66th State House District. Akashic. https://akashic.app/sld-lower/29066/. Accessed May 20, 2026. License: CC BY 4.0.
How did Missouri 66th State House District vote in 2024?
In 2024, Missouri 66th State House District voted Democratic by 74.2 points (D+74.2), carried by the Democratic candidate. Out of 10,977 votes cast, 9,483 went Democratic and 1,341 went Republican.
How many people live in Missouri 66th State House District?
Missouri 66th State House District has a population of 36,683 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Missouri 66th State House District?
Median household income in Missouri 66th State House District is $47,778 — below the national median of $80,734. The Missouri state median is $70,702.
What is the political history of Missouri 66th State House District?
Akashic tracks 38 presidential elections in Missouri 66th State House District from 1876 to 2024. Of those, 30 went Democratic and 0 went Republican.