CalledUnofficial results
Montana Senate District 12
Montana State Senate · Montana
George Nikolakakos held the seat for Republicans, winning by 4.2 points over Mindy Leach.
Staggered Senate
George NikolakakosRepublican · winner
52.1%3,964
Mindy LeachDemocrat
47.9%3,646
7,610 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.
Mindy LeachGeorge Nikolakakos
$27.5K
Raised by the campaign
$31.8K
$47.8K
Spent by the campaign
$176.2K
Campaign money: Montana Commissioner of Political Practices, through Sep 16, 2026; Montana Commissioner of Political Practices, through Oct 27, 2026.
Source: Montana Commissioner of Political Practices campaign filingsUpdated Sep 16, 2026
Pre-election forecast (final, Nov 3)
Our model's last run before Election Day, Nov 3, 2026. It no longer updates.
- Mindy Leach
- 18%
- George Nikolakakos
- 82%
- Projected margin
- R+6.5