MT-01 House 2026

The chance this seat goes Republican in November, across every listed contract, as a 0–100 chance the Republican wins.

LiveHeld by Republicans · projected hold·$3K traded / 24h·14 contracts·5 exchanges·Margin rank 6 of 435
SEAT PMI · 0–100 · CHANCE REPUBLICANS WIN
55.3Toss-up · ▼ 15.1 14d
DEMOCRATEVENREPUBLICAN
Republicans win
55.3
enters as 55.3
Democrats win
44.7
enters as 100 − 44.7 = 55.3

Both legs are aggregated. The Democratic leg is converted as 100 − p, so this seat reads on the same scale as every other.

Control of the House

Does MT-01 decide the House?

No single seat does on today’s prices.
MT-01 is one of the 39 contested seats. Democrats already have 224 seats rated safe or likely, 6 past the 218 majority; Republicans have 172 rated safe or likely, 46 short of 218.
Full House picture
Contracts behind this reading · 6 of 14

Sorted by weight

Will Democratic win the House race for MT-1? - Sam Forstag45.0Kalshi ↗ · Democratic leg · enters as 55.0weight 58.0%Will the Democratic Party win the MT-01 House seat?46.0Polymarket ↗ · Democratic leg · enters as 54.0weight 19.7%Will Republican win the House race for MT-1? - Aaron Flint56.0Kalshi ↗ · Republican leg · enters as 56.0weight 16.5%Will the Republican Party win the MT-01 House seat?54.5Polymarket ↗ · Republican leg · enters as 54.5weight 5.8%MT-01 General Election — Sam Forstag43.0IBKR ↗ · Democratic leg · enters as 57.0weight 0.0%MT-01 General Election — Ryan Busse2.0IBKR ↗ · Democratic leg · enters as 98.0weight 0.0%
Show all 14 contracts
Weights are 24h liquidity share · reconciled reading 55.3 · rows open on the exchange
Other Montana races this cycle

Also on the ballot