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 8th District

Hamadeh is clearly favored to win: Hamadeh wins in 7 of every 8 simulations.

Greene-Placentia (D)
12%
chance of winning
Hamadeh (R)
88%
Average margin
R+8.0
80% of outcomes
R+17 to D+1
Partisan lean
R+16
Polls
No pollsmodel only

Hamadeh is favored to win: Hamadeh wins in 4 of every 5 simulations.

Greene-Placentia (D)
21%
chance of winning
Hamadeh (R)
79%
Average margin
R+7.0
80% of outcomes
R+19 to D+5
Partisan lean
R+16
Polls
No pollsmodel only

Range of outcomes

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

R+8.0R+30R+20R+10EvenD+10D+20D+30
R+7.0R+30R+20R+10EvenD+10D+20D+30

How the odds have moved

Chance of winning by forecast date.

0%25%50%75%100%AugSepOctNovNov 3Greene-Placentia 12%Hamadeh 88%

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

0%25%50%75%100%AugSepOctNovNov 3Greene-Placentia 21%Hamadeh 79%

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

The candidates

RepublicanIncumbent

Abraham Hamadeh

Incumbent U.S. representative

Experience
Statewide office or Congress
Raised
$1.4M
From individuals
$646.8K
Spent
$1.3M
Cash on hand
$137.9K

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 adjustmentR+8.7Fundamentals modelAdds incumbency, past results, money andexperienceR+8.2Polls in similar placesPolling of similar races in Arizona and look-alikeplacesR+7.8Polling averageNo polls of this racenot availableHorizon forecastPolls + fundamentals, projected to Election DayR+8.1Pulse forecastPolls (and polling of similar places) only, todayR+7.1

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)-0.73
Elected-experience edge-1
First-term incumbent-1
Seat's last result vs. expectation5.28
Incumbent's last result vs. expectation5.28

Polls

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

The district

Lean R+16: how much more Democratic or Republican than the nation it votes for president.

Presidential vote

← RepublicanDemocratic →2016 presidentR+20.0R+22.2 vs. nation2020 presidentR+13.4R+18.0 vs. nation2024 presidentR+16.5R+15.0 vs. nation

Precinct results re-aggregated to the current district lines.

Who lives here

Population
805,443
People per km²
537
Adults with a B.A.+
33%
White, no degree
44%of adults
  • White 62%
  • Hispanic 23%
  • Black 4%
  • Asian 5%
  • Other / multiracial 7%

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

369,364 votes · R+13.0
✓ Abraham "abe" Hamadeh (R)56.4%
Gregory Whitten (D)43.4%

2024 President Vote in this district

388,299 two-party votes · R+16.5 · R+15.0 vs. the nation
✓ Donald Trump (R)58.2%
Kamala Harris (D)41.8%

2022

232,542 votes · R+94.9
✓ Debbie Lesko (R)85.0%
Write-In (—)7.5%
Not Qualified (—)4.4%
Jeremy Spreitzer (D)2.2%
Alixandria Guzman (D)0.9%

2020 Earlier district lines

422,449 votes · R+19.1
✓ Debbie Lesko (R)59.6%
Michael Muscato (D)40.4%

2020 President Vote in this district

399,645 two-party votes · R+13.4 · R+18.0 vs. the nation
✓ Donald Trump (R)56.7%
Joe Biden (D)43.3%

2018 Earlier district lines

304,767 votes · R+10.9
✓ Debbie Lesko (R)55.4%
Hiral Tipirneni (D)44.5%

2018 specialEarlier district lines

183,343 votes · R+4.7
✓ Lesko, Debbie (R)52.4%
Tipirneni, Hiral (D)47.6%

2016 President Vote in this district

292,570 two-party votes · R+20.0 · R+22.2 vs. the nation
✓ Donald Trump (R)60.0%
Hillary Clinton (D)40.0%