CalledUnofficial results
Montana House District 84
Montana House of Representatives · Montana
Roy Caldwell held the seat for Republicans, winning by 26.4 points over Tia Nelson.
Roy CaldwellRepublican · winner
63.2%3,760
Tia NelsonDemocrat
36.8%2,189
5,949 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.
Tia NelsonRoy Caldwell
$8K
Raised by the campaign
$8.6K
$6.9K
Spent by the campaign
$25.2K
Campaign money: Montana Commissioner of Political Practices, through Oct 2, 2026; Montana Commissioner of Political Practices, through Oct 7, 2026.
Source: Montana Commissioner of Political Practices campaign filingsUpdated Oct 7, 2026
Pre-election forecast (final, Nov 3)
Our model's last run before Election Day, Nov 3, 2026. It no longer updates.
- Tia Nelson
- 1%
- Roy Caldwell
- 99%
- Projected margin
- R+20.7