- Lead
- 49,713
- Total
- 149,719
- vs nation
- R+31.7
Arizona 1st State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 41,299
- Total
- 144,603
- vs nation
- R+33.0
- Lead
- 35,359
- Total
- 116,097
- vs nation
- R+32.5
- Lead
- 30,286
- Total
- 102,137
- vs nation
- R+33.5
- Lead
- 24,012
- Total
- 101,758
- vs nation
- R+30.9
- Lead
- 20,148
- Total
- 89,109
- vs nation
- R+20.2
- Lead
- 16,006
- Total
- 69,407
- vs nation
- R+23.6
- Lead
- 7,923
- Total
- 60,579
- vs nation
- R+21.6
Key facts
- 2024 presidential margin
- R+33.2MIT Election Lab
- Population
- 237,8962024 5-year
- Population density
- 29 / sq mi2024 5-year · TIGER/Line
- Land area
- 8,122 sq miTIGER/Line
- Median household income
- $69,5552024 5-year
- White (non-Hispanic)
- 77.6%2024 5-year
- Black
- 0.6%2024 5-year
- Hispanic / Latino
- 14.5%2024 5-year
- Peak Democratic margin
- D+40.5 in 1932MIT Election Lab
- Peak Republican margin
- R+45.0 in 1980MIT Election Lab
- Most similar
- State Senate District 30, AZ · twin score 93.2
presidential history
Party record book
Arizona 1st State Senate District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1912–2024 · 29 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Franklin D. Roosevelt1932
69.2%
6,410 votes · D+40.5 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 66.8%
Republican
Ronald Reagan1984
70.6%
25,357 votes · R+42.9 · modeled estimate
Runner-up · Ronald Reagan, 1980 · 68.1%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
50,570votes
35.0% of the vote · R+28.6 · modeled estimate
Runner-up · Kamala Harris, 2024 · 49,308 votes
Republican
Donald Trump2024
99,021votes
66.1% of the vote · R+33.2 · modeled estimate
Runner-up · Donald Trump, 2020 · 91,869 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
Franklin D. Roosevelt1932
+22.7pts D vs U.S.
Place D+40.5 · U.S. D+17.8 · modeled estimate
Runner-up · Woodrow Wilson, 1916 · +20.4 pts
Republican
Barry Goldwater1964
+37.2pts R vs U.S.
Place R+14.6 · U.S. D+22.6 · modeled estimate
Runner-up · Ronald Reagan, 1980 · +35.2 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Arizona SD-1 covers a densely populated urban corridor in Maricopa County where Democratic presidential candidates have carried the district by double digits in recent cycles, making it one of the state's most lopsided legislative seats.
Across the recorded series it reached a Democratic high of 40.5 points in 1932 and a Republican high of 45.0 points in 1980. Between 2020 and 2024 the district moved 4.6 points toward the Republican candidate; the 2024 margin was 33.2 points.
A population of 237,896, a 78% non-Hispanic-white share, and a median household income of $69,555 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 30 and State Senate District 20.
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 →
Arizona 1st State Senate District. Akashic. https://akashic.app/sld-upper/04001/. Accessed May 20, 2026. License: CC BY 4.0.