- Lead
- 8,546
- Total
- 49,817
- vs nation
- D+18.6
Utah 15th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 9,044
- Total
- 54,656
- vs nation
- D+12.1
- Lead
- 4,247
- Total
- 43,721
- vs nation
- D+7.6
- Lead
- 7,736
- Total
- 40,021
- vs nation
- R+23.2
- Lead
- 333
- Total
- 38,360
- vs nation
- R+6.4
- Lead
- 8,025
- Total
- 37,747
- vs nation
- R+18.8
- Lead
- 6,400
- Total
- 31,949
- vs nation
- R+20.6
- Lead
- 800
- Total
- 29,189
- vs nation
- R+11.3
Key facts
- 2024 presidential margin
- D+17.2MIT Election Lab
- Population
- 113,2392024 5-year
- Population density
- 930 / sq mi2024 5-year · TIGER/Line
- Land area
- 122 sq miTIGER/Line
- Median household income
- $87,8652024 5-year
- White (non-Hispanic)
- 71.5%2024 5-year
- Black
- 1.5%2024 5-year
- Hispanic / Latino
- 16.2%2024 5-year
- Peak Democratic margin
- D+75.1 in 1896MIT Election Lab
- Peak Republican margin
- R+43.4 in 1980MIT Election Lab
- Most similar
- State Senate District 14, UT · twin score 95.7
presidential history
Party record book
Utah 15th State Senate 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
87.6%
1,942 votes · D+75.1 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 72.7%
Republican
Ronald Reagan1984
69.0%
18,999 votes · R+38.9 · modeled estimate
Runner-up · Ronald Reagan, 1980 · 67.0%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
30,742votes
56.2% of the vote · D+16.5 · modeled estimate
Runner-up · Kamala Harris, 2024 · 28,019 votes
Republican
Mitt Romney2012
23,165votes
57.9% of the vote · R+19.3 · modeled estimate
Runner-up · George W. Bush, 2004 · 22,368 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
+81.2pts D vs U.S.
Place D+75.1 · U.S. R+6.1 · modeled estimate
Runner-up · Woodrow Wilson, 1916 · +22.7 pts
Republican
Ronald Reagan1980
+33.7pts R vs U.S.
Place R+43.4 · U.S. R+9.7 · modeled estimate
Runner-up · Gerald Ford, 1976 · +25.4 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 | D | 51.0%22,761 | 49.0%21,857 | 44,618 |
Utah 15th State Senate District sits in the Mountain West. In 2024 it voted Democratic.
Across the recorded series it reached a Democratic high of 75.1 points in 1896 and a Republican high of 43.4 points in 1980. Between 2020 and 2024 the district moved 0.6 points toward the Democratic candidate; the 2024 margin was 17.2 points.
A population of 113,239, a 72% non-Hispanic-white share, and a median household income of $87,865 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 14 and State Senate District 8.
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 →
Utah 15th State Senate District. Akashic. https://akashic.app/sld-upper/49015/. Accessed May 20, 2026. License: CC BY 4.0.