Upset Brief · MT-02 · Brian Miller (D) vs. Troy Downing (R), incumbent
A long shot on the math: it takes a 14.7-point national wave.
0%
odds today
1%
odds with the plan
54,482
net votes to find
37
days left; voting starts October 9
Where
- 01+5,953Yellowstone CountyStarting line Downing +22. 5.4% split their ticket.
- 02+3,615Lewis and Clark CountyStarting line Downing +3. 6.2% split their ticket.
- 03+3,207Cascade CountyStarting line Downing +19. 7.9% split their ticket.
- 04+913Park CountyStarting line Downing +3. 5.5% split their ticket.
- 05+653Jefferson CountyStarting line Downing +31. 6.2% split their ticket.
- 06+643Hill CountyStarting line Downing +12. 10.7% split their ticket.
The top 12 counties carry 80% of the plan.
How
- P+20,309PersuadeTicket splitters and the 12 percent still undecided in the latest poll: 20,309 leaning Downing today.
- M+0MobilizeThere are almost no counties Miller's side carries, so turnout alone cannot help here.
- C+2,049ConsolidateVoters who went third party in recent races, in the counties that lean Miller's way.
Plus a national shift of 14.7 points of margin (32,124 votes) that no campaign controls.
What has to be true
- Miller wins 50 percent of the ticket splitters and undecided voters now leaning Downing.
- The national environment moves about 14.7 points toward Miller's side between now and November 3.
- The starting line comes from published 2026 polls, including campaign or party sponsored polls where those are the only ones; if the true gap is different, so is the plan.
The numbers behind it
- 01Crossover regression381 precincts, R² 0.989, 44 crossover precincts identified
- 02Monte Carlo20,000 seeded simulated elections with a 5-point baseline error. 90% range of the final margin with the plan: -52,610 to -10,554 votes.
- 03Money, FEC candidate totals through June 30Miller $3,166 cash on hand; Downing $650,464.
- 04Call program for this list32,066 households, 96,198 dials, about 5,041 live conversations: an estimated $10,322 at published rates.
Independent analysis by The Political Group from official Montana Secretary of State precinct returns (2022 and 2024), FEC filings and published polls, as of September 26, 2026. Not affiliated with any candidate or party.