- Lead
- 84,263
- Total
- 461,623
- vs nation
- R+16.8
Colorado 4th Congressional District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 82,016
- Total
- 441,953
- vs nation
- R+23.0
- Lead
- 100,075
- Total
- 364,715
- vs nation
- R+29.5
- Lead
- 95,425
- Total
- 329,960
- vs nation
- R+32.8
- Lead
- 69,823
- Total
- 303,041
- vs nation
- R+30.3
- Lead
- 99,358
- Total
- 262,533
- vs nation
- R+35.4
- Lead
- 77,423
- Total
- 205,875
- vs nation
- R+38.1
- Lead
- 44,661
- Total
- 156,731
- vs nation
- R+37.0
Key facts
- 2024 presidential margin
- R+18.3MIT Election Lab
- Population
- 721,5352024 5-year
- Population density
- 22 / sq mi2024 5-year · TIGER/Line
- Land area
- 32,138 sq miTIGER/Line
- Median household income
- $115,2392024 5-year
- White (non-Hispanic)
- 75.8%2024 5-year
- Black
- 1.7%2024 5-year
- Hispanic / Latino
- 13.6%2024 5-year
- Peak Democratic margin
- D+39.7 in 1896MIT Election Lab
- Peak Republican margin
- R+53.7 in 1984MIT Election Lab
- Most similar
- Congressional District 5, CO · twin score 84.1
presidential history
Party record book
Colorado 4th Congressional 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
68.3%
9,107 votes · D+39.7 · modeled estimate
Runner-up · Woodrow Wilson, 1916 · 55.5%
Republican
Ronald Reagan1984
76.3%
87,067 votes · R+53.7 · modeled estimate
Runner-up · Richard Nixon, 1972 · 72.6%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Kamala Harris2024
183,010votes
39.6% of the vote · R+18.3 · modeled estimate
Runner-up · Joe Biden, 2020 · 174,511 votes
Republican
Donald Trump2024
267,273votes
57.9% of the vote · R+18.3 · modeled estimate
Runner-up · Donald Trump, 2020 · 256,527 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
+45.7pts D vs U.S.
Place D+39.7 · U.S. R+6.1 · modeled estimate
Runner-up · Woodrow Wilson, 1916 · +13.3 pts
Republican
Benjamin Harrison1892
+52.9pts R vs U.S.
Place R+51.3 · U.S. D+1.7 · modeled estimate
Runner-up · Thomas E. Dewey, 1944 · +40.5 pts
Current officeholders
Federal officeholders only. State and local officeholders are planned for the next data pass.
Senate and governor results are in the Office selector at the top of this page.
U.S. House
Each result reflects the U.S. House district as it was drawn for that election; redistricting has redrawn these lines over time, so they can differ from the current 120th-Congress district shown on the map above.
Covering the entire eastern third of Colorado plus rural southern counties, CO-4 is one of the largest districts by area in the contiguous U.S., where ranching economies and sparse population density have produced consistent double-digit Republican margins in recent election cycles.
Across the recorded series it reached a Democratic high of 39.7 points in 1896 and a Republican high of 53.7 points in 1984. The 2024 margin was 18.3 points.
A population of 721,535, a 76% non-Hispanic-white share, and a median household income of $115,239 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 5 and Congressional District 5.
The congressional 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 4th Congressional District. Akashic. https://akashic.app/cd/0804/. Accessed May 20, 2026. License: CC BY 4.0.