- Lead
- 68,477
- Total
- 124,479
- vs nation
- R+53.5
Arizona 30th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 59,385
- Total
- 117,228
- vs nation
- R+55.1
- Lead
- 45,476
- Total
- 89,665
- vs nation
- R+52.8
- Lead
- 33,814
- Total
- 79,535
- vs nation
- R+46.4
- Lead
- 26,169
- Total
- 76,993
- vs nation
- R+41.3
- Lead
- 19,839
- Total
- 66,014
- vs nation
- R+27.6
- Lead
- 9,261
- Total
- 50,877
- vs nation
- R+18.7
- Lead
- 2,571
- Total
- 47,861
- vs nation
- R+13.9
Key facts
- 2024 presidential margin
- R+55.0MIT Election Lab
- Population
- 237,8512024 5-year
- Population density
- 13 / sq mi2024 5-year · TIGER/Line
- Land area
- 17,790 sq miTIGER/Line
- Median household income
- $57,2632024 5-year
- White (non-Hispanic)
- 74.1%2024 5-year
- Black
- 1.0%2024 5-year
- Hispanic / Latino
- 16.8%2024 5-year
- Peak Democratic margin
- D+45.4 in 1932MIT Election Lab
- Peak Republican margin
- R+55.0 in 2024MIT Election Lab
- Most similar
- State Senate District 1, AZ · twin score 93.2
presidential history
Party record book
Arizona 30th 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
70.9%
1,661 votes · D+45.4 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 70.2%
Republican
Donald Trump2024
77.1%
95,937 votes · R+55.0 · modeled estimate
Runner-up · Donald Trump, 2020 · 74.7%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
28,177votes
24.0% of the vote · R+50.7 · modeled estimate
Runner-up · Kamala Harris, 2024 · 27,460 votes
Republican
Donald Trump2024
95,937votes
77.1% of the vote · R+55.0 · modeled estimate
Runner-up · Donald Trump, 2020 · 87,562 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
+27.6pts D vs U.S.
Place D+45.4 · U.S. D+17.8 · modeled estimate
Runner-up · Woodrow Wilson, 1916 · +26.3 pts
Republican
Donald Trump2020
+55.1pts R vs U.S.
Place R+50.7 · U.S. D+4.5 · modeled estimate
Runner-up · Donald Trump, 2024 · +53.5 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
With a 2024 presidential margin of R+55.1, this district ranks among the most one-sided in Arizona, suggesting a rural or exurban composition where statewide competitive dynamics rarely penetrate down-ballot races.
Across the recorded series it reached a Democratic high of 45.4 points in 1932 and a Republican high of 55.0 points in 2024. Between 2020 and 2024 the district moved 4.4 points toward the Republican candidate; the 2024 margin was 55.0 points.
A population of 237,851, a 74% non-Hispanic-white share, and a median household income of $57,263 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 1 and State Senate District 28.
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 30th State Senate District. Akashic. https://akashic.app/sld-upper/04030/. Accessed May 20, 2026. License: CC BY 4.0.