- Lead
- 8,701
- Total
- 92,619
- vs nation
- R+7.9
Colorado 10th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 10,935
- Total
- 93,088
- vs nation
- R+16.2
- Lead
- 20,671
- Total
- 79,382
- vs nation
- R+28.1
- Lead
- 17,483
- Total
- 71,627
- vs nation
- R+28.3
- Lead
- 15,593
- Total
- 67,407
- vs nation
- R+30.4
- Lead
- 23,147
- Total
- 60,250
- vs nation
- R+36.0
- Lead
- 18,448
- Total
- 50,157
- vs nation
- R+37.3
- Lead
- 13,129
- Total
- 43,056
- vs nation
- R+39.0
Key facts
- 2024 presidential margin
- R+9.4MIT Election Lab
- Population
- 168,3172024 5-year
- Population density
- 3,400 / sq mi2024 5-year · TIGER/Line
- Land area
- 49.5 sq miTIGER/Line
- Median household income
- $91,9302024 5-year
- White (non-Hispanic)
- 67.8%2024 5-year
- Black
- 4.8%2024 5-year
- Hispanic / Latino
- 16.4%2024 5-year
- Peak Democratic margin
- D+39.5 in 1896MIT Election Lab
- Peak Republican margin
- R+54.1 in 1984MIT Election Lab
- Most similar
- State Senate District 9, CO · twin score 93.0
presidential history
Party record book
Colorado 10th State Senate 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
67.9%
4,102 votes · D+39.5 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 53.5%
Republican
Ronald Reagan1984
76.4%
22,512 votes · R+54.1 · modeled estimate
Runner-up · Herbert Hoover, 1928 · 75.7%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Kamala Harris2024
40,662votes
43.9% of the vote · R+9.4 · modeled estimate
Runner-up · Joe Biden, 2020 · 39,276 votes
Republican
Donald Trump2020
50,211votes
53.9% of the vote · R+11.7 · modeled estimate
Runner-up · Donald Trump, 2024 · 49,363 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
+45.6pts D vs U.S.
Place D+39.5 · U.S. R+6.1 · modeled estimate
Runner-up · Woodrow Wilson, 1916 · −2.2 pts
Republican
Benjamin Harrison1892
+47.8pts R vs U.S.
Place R+46.2 · U.S. D+1.7 · a third-party candidate carried the Place · modeled estimate
Runner-up · Bob Dole, 1996 · +39.0 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.
| Year | Vote lead | Democratic | Republican | Total |
|---|---|---|---|---|
| 2024 | R | 42.5%33,773 | 57.5%45,752 | 79,525 |
| 2020 | R | 40.2%32,033 | 59.8%47,718 | 79,751 |
Colorado 10th State Senate District sits in the Rocky Mountain West. In 2024 it voted Republican.
Across the recorded series it reached a Democratic high of 39.5 points in 1896 and a Republican high of 54.1 points in 1984. Between 2020 and 2024 the district moved 2.4 points toward the Democratic candidate; the 2024 margin was 9.4 points.
A population of 168,317, a 68% non-Hispanic-white share, and a median household income of $91,930 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 9 and State Senate District 33.
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 →
Colorado 10th State Senate District. Akashic. https://akashic.app/sld-upper/08010/. Accessed May 20, 2026. License: CC BY 4.0.