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U.S. House · Updated Oct 9

Idaho's 1st District

Russell Fulcher win chance

>99%

Typical margin: Fulcher by 18

Republican

Kaylee Jade Peterson 1%Russell Fulcher 99%

Who's running

Russell FulcherRepublican · Incumbent
Kaylee Jade PetersonDemocrat

The numbers behind it

Cook Political ReportAs of Sep 23, 2026Solid R
Money raisedFEC, through Jun 30, 2026Fulcher $663KPeterson $181K
Campaign money

Russell Fulcher

Raised $663K · $245K cash on hand · through Jun 30, 2026 · FEC filing ↗

Kaylee Jade Peterson

Raised $181K · $15K cash on hand · through Jun 30, 2026 · FEC filing ↗

Our model counts the money gap as worth 0.6 points to Russell Fulcher. Even a 10× gap is worth at most 1.5.

Other filers in this race raised $60K in total.

Candidates' own committees only, from fec.gov. Third-quarter reports are due Oct 15.

How the numbers moved
  1. Sep 23Cook Political Report: Solid RCook Political Report
  2. Jun 30Kaylee Jade Peterson had raised $181KFEC filing
  3. Jun 30Russell Fulcher had raised $663KFEC filing
How we got this number

We blend the polling average (when there is one) with the race's fundamentals: past results, incumbency, the national mood and the money. Then we play the election out 40,000 times, with polling misses that move every race together, and count how often each side wins.

90% of the model's 40,000 simulated elections land between R+30.5 and R+6.0.

No public polls yet, so this forecast rests on the fundamentals alone, with a wider range.

Our method ›