2026 forecast · Idaho 1st

Russ Fulcher is all but certain to win Idaho's 1st District.

Kaylee Peterson vs Russ Fulcher. The model has Fulcher ahead by 35.0 points, winning 100 percent of 2,000 simulated elections.

Safe RModel R +35.0Updated October 22, 2026
Kaylee Peterson
Democrat
31.4%
112,907 projected votes
Russ Fulcher
Republican
66.4%
238,881 projected votes
100%Fulcher
0%Peterson
Fulcher all but certainEach square is one simulated election night, Fulcher wins about 100 of 100
RatingSafe R100% chance for Fulcher
Model marginR +35.0No polls in the race
80 percent rangeR +26.2 to R +43.42,000 simulations
Projected votes359,799Fulcher 66.4%

The district map

Every district in the state, shaded by its rating

Idaho districts

2 districts
Safe DLikely DLean DToss upLean RLikely RSafe R

Vote share

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

Kaylee PetersonDemocrat · 0% to win
31.4%
Russ FulcherRepublican · 100% to win
66.4%

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

359,799 votes
CandidateVotesShare
Russ Fulcher R238,88166.4%
Kaylee Peterson D112,90731.4%
Sarah Zabel I8,0112.2%
Total359,799100%

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%0% Peterson100% Fulcher15 updates agoToday

Polling

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

The Idaho governor polling average
25%30%35%40%45%50%Aug 5Aug 12Aug 19Aug 26Sep 2Sep 9Sep 1627.0Pickens37.4Little
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
Advanced Targeting ResearchSep 16 · 700 RV · NR97%Little +10.0
Change Research for the Stegner campaignJul 30 · 1,213 LV · D3.5%Little +21.0

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
Fulcher +35.0
Chance of winning
Kaylee Peterson0%
Russ Fulcher100%
Simulated vote
Kaylee Peterson31.4%
Russ Fulcher66.4%
Sarah Zabel2.2%
How the model gets there
Partisan leanD +45.0
FundamentalsR +35.1
With pollsR +33.6
Early vote turnoutR +1.5
With early voteR +35.0

Read from 0 ballots cast so far in Idaho, 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 +54R +54Partisan leanthe state's baselineD +45.0Fundamentalsapproval, economy, candidatesR +35.1With pollsno pollsR +33.6With early voteturnout so farR +35.0
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.