Colorado 21st State House District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 (partial returns from 1880) · 37 presidential cycles · 37 with a vote-share denominator · 34 with a national benchmark
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
William J. Bryan1896
70.6%
1,480 votes · D+44.2 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 55.9%
Republican
Ronald Reagan1984
75.6%
7,547 votes · R+52.3 · modeled estimate
Runner-up · Herbert Hoover, 1928 · 75.4%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
13,648votes
41.4% of the vote · R+12.0 · modeled estimate
Runner-up · Kamala Harris, 2024 · 13,221 votes
Republican
Donald Trump2024
18,062votes
56.1% of the vote · R+15.0 · modeled estimate
Runner-up · Donald Trump, 2020 · 17,590 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
+50.3pts D vs U.S.
Place D+44.2 · U.S. R+6.1 · modeled estimate
Runner-up · Woodrow Wilson, 1916 · 0.0 pts
Republican
Benjamin Harrison1892
+42.3pts R vs U.S.
Place R+40.6 · U.S. D+1.7 · a third-party candidate carried the Place · modeled estimate
Runner-up · Bob Dole, 1996 · +36.2 pts
current representation
Current officeholders
RMary BradfieldState House · 21
State legislative officeholder from OpenStates nightly current-legislator data.
Colorado House District 21 covers communities along the foothills west of Denver, where the 2024 presidential margin landed at R+15.0 — well above the statewide average and consistent with the area's pattern of durable Republican preference.
Across the recorded series it reached a Democratic high of 44.2 points in 1896 and a Republican high of 52.3 points in 1984. Between 2020 and 2024 the district moved 3.1 points toward the Republican candidate; the 2024 margin was 15.0 points.
A population of 88,583, a 56% non-Hispanic-white share, and a median household income of $85,474 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 84 and State House District 14.
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.
Colorado 21st State House District. Akashic. https://akashic.app/sld-lower/08021/. Accessed May 20, 2026. License: CC BY 4.0.
How did Colorado 21st State House District vote in 2024?
In 2024, Colorado 21st State House District voted Republican by 15.0 points (R+15.0), carried by the Republican candidate. Out of 32,210 votes cast, 13,221 went Democratic and 18,062 went Republican.
When did Colorado 21st State House District last vote Democratic?
The most recent presidential election in which Colorado 21st State House District voted Democratic was 1964.
How many people live in Colorado 21st State House District?
Colorado 21st State House District has a population of 88,583 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Colorado 21st State House District?
Median household income in Colorado 21st State House District is $85,474 — above the national median of $80,734. The Colorado state median is $95,470.
What is the political history of Colorado 21st State House District?
Akashic tracks 38 presidential elections in Colorado 21st State House District from 1876 to 2024. Of those, 4 went Democratic and 31 went Republican.