Horizon · our Election Day forecast: polls, plus fundamentals like incumbency, fundraising and past results.

Pulse · polls only: where the races stand today, with no fundamentals and wider uncertainty.

What's the difference?

Arizona › U.S. House of Representatives · November 3, 2026 · Updated Oct 16, 2026

Arizona's 4th District

Stanton is very likely to win: Stanton wins in 49 of every 50 simulations.

Stanton (D)
99%
chance of winning
Jasser (R)
1%
Average margin
D+17.5
80% of outcomes
D+9 to D+27
Partisan lean
D+8
Polls
No pollsmodel only

Stanton is very likely to win: Stanton wins in 19 of every 20 simulations.

Stanton (D)
96%
chance of winning
Jasser (R)
4%
Average margin
D+16.8
80% of outcomes
D+5 to D+29
Partisan lean
D+8
Polls
No pollsmodel only

Range of outcomes

Final margin across our simulations; the white dashes mark the middle 80%.

D+17.5R+40R+20EvenD+20D+40
D+16.8R+40R+20EvenD+20D+40

How the odds have moved

Chance of winning by forecast date.

0%25%50%75%100%AugSepOctNovNov 3Stanton 99%Jasser 1%

Updated nightly. Each day is the current model run on the polls that had ended by then (how).

0%25%50%75%100%AugSepOctNovNov 3Stanton 96%Jasser 4%

Updated nightly. Each day is the current model run on the polls that had ended by then (how).

The candidates

DemocraticIncumbent

Greg Stanton

Incumbent U.S. representative

Experience
Statewide office or Congress
Raised
$2.6M
From individuals
$1.8M
Spent
$1.7M
Cash on hand
$1.9M

Money: FEC, through Sep 30, 2026.

Profile and career · Wikipedia

Republican

Zuhdi Jasser

Physician and candidate for this district in 2024

Experience
No elected office
Raised
$732.9K
From individuals
$715.2K
Spent
$616.8K
Cash on hand
$116.1K

Money: FEC, through Sep 30, 2026.

Profile and career · Wikipedia

What goes into the forecast

Every ingredient's estimate of the final margin.

National environment
D+9.5Election Day forecast; federal races run in it
Swing reaching this office
78%Of a shift in the environment, from past House races since 2016
Southwest adjustment
−1.2How House races in the region have run against lean and environment lately
← RepublicanDemocratic →Lean + environmentUsual vote, shifted by 78% of the environment andthe Southwest adjustmentD+14.7Fundamentals modelAdds incumbency, past results, money andexperienceD+17.3Polls in similar placesPolling of similar races in Arizona and look-alikeplacesD+17.6Polling averageNo polls of this racenot availableHorizon forecastPolls + fundamentals, projected to Election DayD+17.4Pulse forecastPolls (and polling of similar places) only, todayD+16.6

Each estimate is a margin before national and statewide uncertainty is simulated. Horizon blends polls, fundamentals and a little of the similar-places estimate, weighting each by how precise it is; Pulse uses polls and similar places only.

Fundamentals inputs
Incumbency (+1 D, −1 R)1
Fundraising edge (log ratio of individual money)0.91
Elected-experience edge1
First-term incumbent0
Seat's last result vs. expectation2.25
Incumbent's last result vs. expectation2.25

Polls

No public polls of this race. The forecast relies on fundamentals and on polling of similar places.

The district

Lean D+8: how much more Democratic or Republican than the nation it votes for president.

Presidential vote

← RepublicanDemocratic →2016 presidentD+2.9D+0.7 vs. nation2020 presidentD+10.7D+6.1 vs. nation2024 presidentD+6.8D+8.3 vs. nation

Precinct results re-aggregated to the current district lines.

Who lives here

Population
793,719
People per km²
1,705
Adults with a B.A.+
39%
White, no degree
35%of adults
  • White 55%
  • Hispanic 27%
  • Black 5%
  • Asian 6%
  • Other / multiracial 8%

American Community Survey 2020–2024, aggregated from census tracts.

Past results

Results in the same-numbered district; earlier elections may have used different lines.

2024

334,805 votes · D+7.4
✓ Greg Stanton (D)52.7%
Kelly Cooper (R)45.4%
Vincent Beck-Jones (G)1.8%

2024 President Vote in this district

342,523 two-party votes · D+6.8 · D+8.3 vs. the nation
✓ Kamala Harris (D)53.4%
Donald Trump (R)46.6%

2022

266,146 votes · D+12.2
✓ Greg Stanton (D)56.0%
Kelly Cooper (R)43.8%

2020 Earlier district lines

398,486 votes · R+39.5
✓ Paul A Gosar (R)69.8%
Delina Disanto (D)30.2%

2020 President Vote in this district

362,041 two-party votes · D+10.7 · D+6.1 vs. the nation
✓ Joe Biden (D)55.3%
Donald Trump (R)44.7%

2018 Earlier district lines

277,230 votes · R+38.2
✓ Paul Gosar (R)68.1%
David Brill (D)30.5%
Haryaksha Gregor Knauer (G)1.3%

2016 Earlier district lines

285,433 votes · R+42.9
✓ Paul A Gosar (R)71.3%
Mikel Weisser (D)28.5%

2016 President Vote in this district

261,687 two-party votes · D+2.9 · D+0.7 vs. the nation
✓ Hillary Clinton (D)51.5%
Donald Trump (R)48.5%