- Lead
- 5,219
- Total
- 13,223
- vs nation
- D+40.9
Utah 21st State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 6,666
- Total
- 14,392
- vs nation
- D+41.9
- Lead
- 3,930
- Total
- 9,814
- vs nation
- D+38.0
- Lead
- 1,661
- Total
- 8,364
- vs nation
- D+16.0
- Lead
- 3,405
- Total
- 8,704
- vs nation
- D+31.8
- Lead
- 1,471
- Total
- 7,861
- vs nation
- D+21.2
- Lead
- 1,147
- Total
- 6,630
- vs nation
- D+16.8
- Lead
- 2,092
- Total
- 6,458
- vs nation
- D+23.9
Key facts
- 2024 presidential margin
- D+39.5MIT Election Lab
- Population
- 44,8242024 5-year
- Population density
- 659 / sq mi2024 5-year · TIGER/Line
- Land area
- 68 sq miTIGER/Line
- Median household income
- $71,2662024 5-year
- White (non-Hispanic)
- 39.3%2024 5-year
- Black
- 4.3%2024 5-year
- Hispanic / Latino
- 42.5%2024 5-year
- Peak Democratic margin
- D+95.0 in 1896MIT Election Lab
- Peak Republican margin
- R+9.4 in 1980MIT Election Lab
- Most similar
- State House District 25, UT · twin score 93.7
presidential history
Party record book
Utah 21st State House District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1896–2024 · 33 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
William J. Bryan1896
97.5%
629 votes · D+95.0 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 85.6%
Republican
Ronald Reagan1980
49.8%
2,414 votes · R+9.4 · modeled estimate
Runner-up · Ronald Reagan, 1984 · 49.7%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
10,201votes
70.9% of the vote · D+46.3 · modeled estimate
Runner-up · Kamala Harris, 2024 · 8,856 votes
Republican
Donald Trump2024
3,637votes
27.5% of the vote · D+39.5 · modeled estimate
Runner-up · Donald Trump, 2020 · 3,535 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
+101.1pts D vs U.S.
Place D+95.0 · U.S. R+6.1 · modeled estimate
Runner-up · Woodrow Wilson, 1916 · +57.0 pts
Republican
Ronald Reagan1980
−0.4pts R vs U.S.
Place R+9.4 · U.S. R+9.7 · modeled estimate
Runner-up · William H. Taft, 1912 · −7.3 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Utah 21st State House District sits in the Mountain West. In 2024 it voted Democratic.
Across the recorded series it reached a Democratic high of 95.0 points in 1896 and a Republican high of 9.4 points in 1980. Between 2020 and 2024 the district moved 6.8 points toward the Republican candidate; the 2024 margin was 39.5 points.
A population of 44,824, a 39% non-Hispanic-white share, and a median household income of $71,266 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 25 and State House District 32.
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.
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 →
Utah 21st State House District. Akashic. https://akashic.app/sld-lower/49021/. Accessed May 20, 2026. License: CC BY 4.0.