CalledUnofficial results
Idaho Legislative District 35
Idaho State Senate · Idaho
Mark Harris won re-election by 40.0 points over Marty Rotz Kilhefner.
Mark HarrisRepublican · winner · incumbent
70.0%15,042
Marty Rotz KilhefnerDemocrat
30.0%6,447
21,489 votes
Source: Idaho Secretary of State unofficial resultsUpdated Nov 7, 2026, 1:21 PM ET
Where the race moved
Against the 2024 presidential vote
The seat's recent races
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)
Money in this race
Each line compares the two campaigns on one scale.
Marty Rotz KilhefnerMark Harris
$5K
Raised by the campaign
$64.7K
$4.1K
Spent by the campaign
$56.3K
$4.2K
Cash on hand
$65.3K
Campaign money: Idaho Secretary of State, through Sep 30, 2026; Idaho Secretary of State, through Oct 26, 2026.
Source: Idaho Secretary of State campaign filingsUpdated Sep 30, 2026
Pre-election forecast (final, Nov 3)
Our model's last run before Election Day, Nov 3, 2026. It no longer updates.
- Marty Rotz Kilhefner
- <1%
- Mark Harris
- >99%
- Projected margin
- R+40.3