- Lead
- 18,495
- Total
- 94,275
- vs nation
- D+21.1
Arizona 8th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 29,680
- Total
- 103,565
- vs nation
- D+24.2
- Lead
- 17,249
- Total
- 79,187
- vs nation
- D+19.7
- Lead
- 10,766
- Total
- 67,307
- vs nation
- D+12.1
- Lead
- 10,866
- Total
- 66,568
- vs nation
- D+9.1
- Lead
- 7,265
- Total
- 57,278
- vs nation
- D+15.1
- Lead
- 6,933
- Total
- 44,194
- vs nation
- D+15.2
- Lead
- 8,995
- Total
- 41,264
- vs nation
- D+13.3
Key facts
- 2024 presidential margin
- D+19.6MIT Election Lab
- Population
- 244,1662024 5-year
- Population density
- 1,839 / sq mi2024 5-year · TIGER/Line
- Land area
- 133 sq miTIGER/Line
- Median household income
- $76,7722024 5-year
- White (non-Hispanic)
- 52.8%2024 5-year
- Black
- 6.4%2024 5-year
- Hispanic / Latino
- 25.2%2024 5-year
- Peak Democratic margin
- D+63.4 in 1936MIT Election Lab
- Peak Republican margin
- R+20.6 in 1984MIT Election Lab
- Most similar
- Assembly District 37, CA · twin score 88.2
presidential history
Party record book
Arizona 8th State House 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
78.3%
1,894 votes · D+59.6 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 78.3%
Republican
Ronald Reagan1984
59.5%
14,960 votes · R+20.6 · modeled estimate
Runner-up · Richard Nixon, 1972 · 55.8%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
65,469votes
63.2% of the vote · D+28.7 · modeled estimate
Runner-up · Kamala Harris, 2024 · 55,595 votes
Republican
Donald Trump2024
37,100votes
39.4% of the vote · D+19.6 · modeled estimate
Runner-up · Donald Trump, 2020 · 35,789 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
James M. Cox1920
+58.4pts D vs U.S.
Place D+32.2 · U.S. R+26.2 · modeled estimate
Runner-up · John W. Davis, 1924 · +54.5 pts
Republican
Ronald Reagan1980
+7.9pts R vs U.S.
Place R+17.7 · U.S. R+9.7 · modeled estimate
Runner-up · Barry Goldwater, 1964 · +3.2 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
With a 2024 presidential margin of D+19.7, this Maricopa-area district ranks among the state's most reliably blue seats, and its quarter-million residents make it a dense anchor in Arizona's legislative map.
Across the recorded series it reached a Democratic high of 63.4 points in 1936 and a Republican high of 20.6 points in 1984. Between 2020 and 2024 the district moved 9.0 points toward the Republican candidate; the 2024 margin was 19.6 points.
A population of 244,166, a 53% non-Hispanic-white share, and a median household income of $76,772 describe the district. The district's voting pattern over the last decade is most similar to that of Assembly District 37 and State House District 114.
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 →
Arizona 8th State House District. Akashic. https://akashic.app/sld-lower/04008/. Accessed May 20, 2026. License: CC BY 4.0.