CalledUnofficial results
Montana House District 66
Montana House of Representatives · Montana
Eric Matthews won re-election by 26.2 points over Owen Lang.
Eric MatthewsDemocrat · winner · incumbent
63.1%3,992
Owen LangRepublican
36.9%2,335
6,327 votes
Source: Montana Secretary of State unofficial resultsUpdated Nov 7, 2026, 1:22 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.
Eric MatthewsOwen Lang
$14.7K
Raised by the campaign
$2.4K
$284
Spent by the campaign
$1.5K
Campaign money: Montana Commissioner of Political Practices, through Oct 4, 2026; Montana Commissioner of Political Practices, through Sep 30, 2026.
Source: Montana Commissioner of Political Practices 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.
- Eric Matthews
- >99%
- Owen Lang
- 1%
- Projected margin
- D+21.8