Forstag Tied With Flint at 44%, MT-01 Market Falls to Toss-Up

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Sam Forstag Polling Shows MT-01 Tied, and Prediction Markets Just Caught Up

The MT-01 House winner market now prices the race as a coin flip: Democrat Sam Forstag and Republican Aaron Flint are tied at 44% each in the most recent public poll, an Impact Research survey conducted June 22-25. Forstag, a smokejumper and union leader, has also out-raised Flint $1.38 million to $1.30 million through the most recent filing period, giving Democrats a rare fundraising edge in a district that Ryan Zinke carried twice.

Those two data points explain a rapid repricing on prediction markets tracking the MT-01 House winner contract. Republican implied probability has fallen from 61% to 50% over the past three days, an 11-point drop that moves the race from "likely Republican" territory into what market participants treat as a pure toss-up. Three days ago, bettors were pricing a comfortable Flint hold. Now the contract reflects a coin flip.

The structural reason is straightforward: this is an open seat. Zinke's decision not to seek another full term removed the incumbency advantage that insulated this district from Democratic competition. Forstag's fundraising parity and the tied June poll are concrete evidence that the open-seat vacuum has created a real contest, not just an aspirational Democratic campaign.

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MT-01 House Race: Where Aaron Flint and Sam Forstag Stand Right Now

Republican Party odds in the MT-01 House winner market sit at 50%, with Forstag priced near 44% across platforms. The gap between Kalshi (56% Republican) and Polymarket (43% Republican) is wide enough that cross-platform pricing has not converged, a sign that the market is still digesting the shift rather than settling on a consensus.

Prediction-market view

Live prices, venue by venue

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Aaron Flint (R)

Consensus YES price across 3 venues

70%average

KalshiBest YES price69¢Polymarket69¢Polymarket US72¢

Sam Forstag (D)

Consensus YES price across 3 venues

30%average

KalshiBest YES price29¢Polymarket US29¢Polymarket33¢

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Context matters for interpreting these numbers. Flint still leads the polling average at 46.0% to Forstag's 43.5%, a gap of 2.5 points. The Cook Political Report rates the seat "Likely Republican" as of its July 14 update. The polling average and the rating agencies still give Flint a modest edge, while the prediction market has priced the race as a virtual dead heat.

That disconnect is the story. Markets can move faster than rating agencies update their classifications. The question is whether the market is getting ahead of the evidence or whether Cook's "Likely Republican" tag is stale.

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What Triggered the Odds Collapse in Montana's 1st District Race

An 11-point move in three days usually traces to a specific catalyst: a poll drop, a scandal, a major endorsement. No single breaking event has been confirmed in the last 72 hours as the trigger. The more likely explanation is that the market is catching up to a cluster of signals that accumulated over the summer.

The June Impact Research poll showing a 44-44 tie was the first hard evidence that Forstag could compete on even terms. Forstag's $1.38 million fundraising haul, slightly ahead of Flint's $1.30 million, confirmed that Democratic donors and committees view this as a winnable pickup. Reports that Democrats have targeted MT-01 with additional party resources reinforce the structural case. Open-seat races without an incumbent's personal brand and constituent-service advantage are historically more volatile. Zinke's departure removed the single biggest Republican asset in the district.

The timing of the market move may also reflect delayed absorption of these signals. Prediction markets for down-ballot House races tend to be thinner than presidential or Senate contracts. Smaller pools of capital can reprice more abruptly once a critical mass of participants updates their assumptions.

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The Case Against Forstag: Why Republicans Could Still Hold MT-01

The strongest argument for Flint is the district itself. Montana's 1st encompasses the western half of the state, including Missoula (a Democratic college town) but also vast rural and exurban territory that voted for Trump by double digits. A single poll showing a tie does not erase the structural Republican lean. Flint's 46% polling average still leads Forstag's 43.5%, and that margin could widen if Republican outside groups and the NRCC invest heavily once the race is formally rated as competitive.

Flint's profile as a radio host gives him name recognition across the district that Forstag, despite his biography as a wildland firefighter, may struggle to match without sustained ad spending. If national Democrats divert resources to higher-priority Senate races or defensive House seats, Forstag's current fundraising parity could evaporate.

Cook's "Likely Republican" rating, while arguably lagging, reflects an institutional view that the district's partisan lean remains a formidable baseline advantage. Markets pricing a toss-up may be overweighting one tied poll and underweighting fundamentals.

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What Comes Next for the MT-01 House Winner Market

The next catalyst will be fresh polling. If a late-summer or early-fall survey confirms the June tie or shows Forstag pulling ahead, expect Republican odds to dip below 50% for the first time. If Flint opens a lead of 4 points or more, the market will likely snap back toward 60%.

Watch fundraising disclosures closely. Forstag's slight edge in total raised ($1.38M to $1.30M) is notable but not yet commanding. The real tell is whether the DCCC formally upgrades its investment in the race, which would signal the party believes internal polling supports the public numbers.

For live odds and resolution details, visit the MT-01 House winner market page. The contract resolves on November 4, 2026, when Montana certifies the general election result. Between now and then, the gap between Cook's "Likely Republican" and the market's coin flip will either close by the rating moving toward the market, or by the market moving back toward the rating. The June poll and Forstag's fundraising suggest the rating is the one that needs updating.