- Lead
- 1,452
- Total
- 123,167
- vs nation
- D+0.3
Arizona 13th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 3,790
- Total
- 125,846
- vs nation
- R+1.4
- Lead
- 4,621
- Total
- 95,620
- vs nation
- R+6.9
- Lead
- 10,826
- Total
- 84,056
- vs nation
- R+16.7
- Lead
- 10,591
- Total
- 83,497
- vs nation
- R+20.0
- Lead
- 12,077
- Total
- 72,822
- vs nation
- R+14.1
- Lead
- 6,857
- Total
- 54,910
- vs nation
- R+13.0
- Lead
- 2,367
- Total
- 49,331
- vs nation
- R+13.3
Key facts
- 2024 presidential margin
- R+1.2MIT Election Lab
- Population
- 237,8662024 5-year
- Population density
- 3,776 / sq mi2024 5-year · TIGER/Line
- Land area
- 63 sq miTIGER/Line
- Median household income
- $108,1962024 5-year
- White (non-Hispanic)
- 56.4%2024 5-year
- Black
- 4.9%2024 5-year
- Hispanic / Latino
- 21.2%2024 5-year
- Peak Democratic margin
- D+37.4 in 1936MIT Election Lab
- Peak Republican margin
- R+46.4 in 1984MIT Election Lab
- Most similar
- State Senate District 40, CA · twin score 92.7
presidential history
Party record book
Arizona 13th 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. Roosevelt1936
66.6%
1,983 votes · D+37.4 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1932 · 64.2%
Republican
Ronald Reagan1984
72.7%
25,574 votes · R+46.4 · modeled estimate
Runner-up · Richard Nixon, 1972 · 70.8%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
63,862votes
50.7% of the vote · D+3.0 · modeled estimate
Runner-up · Kamala Harris, 2024 · 59,904 votes
Republican
Donald Trump2024
61,356votes
49.8% of the vote · R+1.2 · modeled estimate
Runner-up · Donald Trump, 2020 · 60,072 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
John W. Davis1924
+15.2pts D vs U.S.
Place R+9.9 · U.S. R+25.2 · modeled estimate
Runner-up · Woodrow Wilson, 1912 · +13.4 pts
Republican
Barry Goldwater1964
+32.7pts R vs U.S.
Place R+10.1 · U.S. D+22.6 · modeled estimate
Runner-up · Ronald Reagan, 1980 · +32.6 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Arizona Senate District 13 sits in the competitive suburban belt around Phoenix, where a 1.2-point Republican presidential margin in 2024 signals a district that has tightened considerably as the metro area's demographics and migration patterns continue to shift.
Across the recorded series it reached a Democratic high of 37.4 points in 1936 and a Republican high of 46.4 points in 1984. Between 2020 and 2024 the district moved 4.2 points toward the Republican candidate; the 2024 margin was 1.2 points.
A population of 237,866, a 56% non-Hispanic-white share, and a median household income of $108,196 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 40 and State Senate District 12.
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.
Compare State Senate District 13 with…
Open campaign intelligence report → · All twelve comparisons →
Arizona 13th State Senate District. Akashic. https://akashic.app/sld-upper/04013/. Accessed May 20, 2026. License: CC BY 4.0.