2026 forecast · Arizona 5th

Mark Lamb is favored to win Arizona's 5th District.

Elizabeth Lee vs Mark Lamb, an open seat. The model has Lamb ahead by 6.4 points, winning 83 percent of 2,000 simulated elections.

Likely RModel R +6.4Updated October 22, 2026
Elizabeth Lee
Democrat
45.7%
160,423 projected votes
Mark Lamb
Republican
52.1%
182,868 projected votes
83%Lamb
17%Lee
Lamb favoredEach square is one simulated election night, Lamb wins about 83 of 100
RatingLikely R83% chance for Lamb
Model marginR +6.4No polls in the race
80 percent rangeD +2.5 to R +14.92,000 simulations
Projected votes351,116Lamb 52.1%

The district map

Every district in the state, shaded by its rating

Arizona districts

9 districts
Safe DLikely DLean DToss upLean RLikely RSafe R

Vote share

Each candidate's projected share and the range of 80 percent of simulations

Elizabeth LeeDemocrat · 17% to win
45.7%
Mark LambRepublican · 83% to win
52.1%

Scale runs from 25 to 75 percent. The dot is the forecast, the band is the 80 percent range and the brighter tick marks 50 percent.

Projected district vote

351,116 votes
CandidateVotesShare
Mark Lamb R182,86852.1%
Elizabeth Lee D160,42345.7%
Blake Bracht I7,8252.2%
Total351,116100%

Each candidate's expected vote in the On Point simulation, at the forecast's projected turnout.

The trend

Each side's chance of winning over the forecast's recent updates

0%25%50%75%100%17% Lee83% Lamb16 updates agoToday

Polling

Every poll in the average, and how the model reads it

The Arizona governor polling average
30%35%40%45%50%55%MayJunJulAugSepOct49.3Hobbs43.8Biggs
The line is the On Point average: a robust LOWESS fit through the polls, weighted by recency, sample, voter screen and pollster grade, refit three times so outliers count for lessDot size is each poll's weight todayHover or use the arrow keys to read any day
What moves the average today
GrayHouse for Norton (R)Oct 8 · 550 LV · NR19%Hobbs +6.0
Steve Cortes for League of American Workers (R)Oct 6 · 1,513 LV · NR19%Hobbs +5.7
Quantus InsightsAug 17 · 780 LV · Gold19%Hobbs +6.0
GQR for Hobbs (D)Oct 4 · 600 LV · NR18%Hobbs +4.0
Equis ResearchSep 9 · 1,214 RV · NR9.8%Hobbs +6.0
The Tarrance Group (R)Jul 30 · 600 LV · A4.5%Hobbs +4.0
Every other poll together: 11%

This is the same On Point polling average as the full average page. The forecast reads the polls through its own Election Day projection, shown as the On Point average in the table below, and blends it with partisan lean and fundamentals.

Polls of the race

Full average
PollsterSampleAgeMargin
On Point averageWeighted averageNo polls

Each margin is the poll as the pollster published it. The forecast counts every poll after its house effect and the undecided split, which is what the trail above shows; hover a margin for the counted value. Lean R and Lean D mark partisan leaning firms.

Model margin
Lamb +6.4
Chance of winning
Elizabeth Lee17%
Mark Lamb83%
Simulated vote
Elizabeth Lee45.7%
Mark Lamb52.1%
Blake Bracht2.2%
How the model gets there
Partisan leanD +20.0
FundamentalsR +6.3
With pollsR +6.8
Early vote turnoutD +0.5
With early voteR +6.4

Read from 0 ballots cast so far in Arizona, against the party mix the forecast expected of them, with similar states and primary turnout. Early vote tracker

How we got here

From the state's partisan lean to the forecast, one stage at a time

D +24R +24Partisan leanthe state's baselineD +20.0Fundamentalsapproval, economy, candidatesR +6.3With pollsno pollsR +6.8With early voteturnout so farR +6.4
Methodology
Every county is rebuilt by simulating voters going to the polls, 2,000 times, from On Point Polling survey data, past results, and the polling average. How the model works.