Montana 66th State House District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 · 34 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
William J. Bryan1896
83.6%
199 votes · D+67.2 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 71.0%
Republican
Dwight D. Eisenhower1952
68.8%
711 votes · R+37.7 · modeled estimate
Runner-up · Richard Nixon, 1972 · 63.2%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Kamala Harris2024
4,088votes
55.8% of the vote · D+14.8 · modeled estimate
Runner-up · Joe Biden, 2020 · 3,948 votes
Republican
Donald Trump2024
3,008votes
41.1% of the vote · D+14.8 · modeled estimate
Runner-up · Donald Trump, 2020 · 2,968 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
William J. Bryan1896
+73.3pts D vs U.S.
Place D+67.2 · U.S. R+6.1 · modeled estimate
Runner-up · William J. Bryan, 1900 · +27.8 pts
Republican
Dwight D. Eisenhower1952
+27.0pts R vs U.S.
Place R+37.7 · U.S. R+10.8 · modeled estimate
Runner-up · Gerald Ford, 1976 · +23.6 pts
current representation
Current officeholders
DEric MatthewsState House · 66
State legislative officeholder from OpenStates nightly current-legislator data.
U.S. House elections · 3 House
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.
Source · Akashic county-allocated estimate from certified county returns, House; not precinct-counted.
Year
Vote lead
Democratic
Republican
Total
2024
D
53.3%3,180
46.7%2,784
5,964
2020
D
54.4%3,384
45.6%2,832
6,216
2018
D
57.5%2,751
42.5%2,035
4,786
Montana 66th State House District sits in the Northern Rockies. In 2024 it voted Democratic.
Across the recorded series it reached a Democratic high of 67.2 points in 1896 and a Republican high of 37.7 points in 1952. Between 2020 and 2024 the district moved 1.1 points toward the Democratic candidate; the 2024 margin was 14.8 points.
A population of 10,906, a 89% non-Hispanic-white share, and a median household income of $99,100 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 59 and State House District 94.
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.
Montana 66th State House District. Akashic. https://akashic.app/sld-lower/30066/. Accessed May 20, 2026. License: CC BY 4.0.
How did Montana 66th State House District vote in 2024?
In 2024, Montana 66th State House District voted Democratic by 14.8 points (D+14.8), carried by the Democratic candidate. Out of 7,320 votes cast, 4,088 went Democratic and 3,008 went Republican.
When did Montana 66th State House District last vote Republican?
The most recent presidential election in which Montana 66th State House District voted Republican was 2004.
How many people live in Montana 66th State House District?
Montana 66th State House District has a population of 10,906 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Montana 66th State House District?
Median household income in Montana 66th State House District is $99,100 — above the national median of $80,734. The Montana state median is $72,509.
What is the political history of Montana 66th State House District?
Akashic tracks 38 presidential elections in Montana 66th State House District from 1876 to 2024. Of those, 17 went Democratic and 17 went Republican.