99chambers

U.S. House seat · lines in effect since 2022

Arizona's 4th District

A district of about 794,000 people, 27% Hispanic, 39% of adults with a bachelor's degree. It votes D+7.7 relative to the nation for president.

Greg Stanton (D) · since Jan 3, 2019Next election Nov 7, 2028The 2026 race →
AZ-4

Source: 2026 results: Arizona Secretary of State; boundaries: Census Bureau TIGER/LineUpdated Nov 7, 2026, 3:01 PM ET

Where it sits among all 435 seats

Every U.S. House seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.

D+7.7175th most
Democratic
Most DemocraticMost Republican218th seat · the majority line37AZ-4612859

Labels below the bar mark 8 other seats in Arizona.

Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET

Every race on these lines

Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.

202220242026
U.S. HouseD+12.2D+7.3D+27.1

Outlined: the race for this seat itselfBlank: no race that year

Source: 99chambers results archive: precinct results allocated to current lines; 2026: Arizona Secretary of StateUpdated Nov 7, 2026, 3:01 PM ET

Who lives here, compared

Grey bars show the spread of all 435 seats. Small marks are other seats in Arizona. The black marker is AZ-4.

Adults with a bachelor's degree39% 69th pct · 4th of 9 in AZ

Higher than 69% of seats.

White adults without a degree35% 44th pct · 6th of 9 in AZ

Lower than 56% of seats.

Hispanic residents27% 78th pct · 4th of 9 in AZ

Higher than 78% of seats.

Black residents5% 38th pct · 2nd of 9 in AZ

Lower than 62% of seats.

Asian residents6% 68th pct · 2nd of 9 in AZ

Higher than 68% of seats.

People per square mile4,415 91st pct · 1st of 9 in AZ

Denser than 91% of seats.

Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET

Seats most like this one

Nearest seats on demographics, density and lean. 1 of the 4 flipped this year.

IL-6
44% college gradsD+7.0Held DCA-6
23% Hispanic · 34% college gradsD+9.7Flipped DCT-3
40% college gradsD+16.1Held DIL-8
26% Hispanic · 40% college gradsD+9.3Held D

Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET

Who has held it

These lines took effect in 2022.

  1. Greg Stanton (D)
    2023– · Won 2022 by 12.2, 2024 by 7.3, 2026 by 27.1

Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)