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Will the Democratic Party win the MT-01 House seat?
34%
Agent
32%
Market Price
+2.5%
Edge
52%
Confidence
53,320
Volume
1.0c
Spread
21
Days to resolution
8
Markets in event
final rationale
Mean of 2 draws (0.34, 0.34). (0) Nothing has resolved. The election is November 3, 2026, and fec.gov and the media have no results, so Democrat Sam Forstag must actually beat Republican Aaron Flint in the open seat Zinke is leaving. (a) About 20 days remain until Election Day, and absentee ballots are already out. (b) The status quo is a lean-Republican race. Cook, Sabato and Inside Elections all moved MT-01 from Likely R to Lean R in late September and early October, Trump carried the district by about 11 points, and Democrats have not won a Montana House seat in nearly three decades. (c) NO path: Trump's Kalispell rally and a roughly 5-to-1 outside-money edge for Flint push undecideds and older midterm voters toward him, and he wins by 2–5 points in an R+5 seat with little ticket-splitting. (d) YES path: Forstag keeps the Tester-2024 coalition in Missoula, Bozeman and Butte, and his favorability edge (41/19 vs Flint's 31/32) holds. A Democratic-leaning national environment then tips a race that every September poll shows within 1–2 points; Polymarket prices Democratic House control at about 90%. The anchor is Polymarket at 31.5%, drifting down 6 points over 30 days. Silver Bulletin's FLIPR has Forstag at 38.8% and smarter.vote at about 35%, and three polls show a dead heat, so I nudge slightly above the market. Heavier GOP outside money and no independent poll showing Forstag ahead keep me well below 40%.
price vs. prediction
market price
agent forecast at t+0
5 follow-ups
1. Planner Opus 5.5 · picks the research tools
Tools chosen:
polymarket_direct
resolution_source
kalshi_related
polymarket_related
wikipedia
Planner reasoning
Polymarket question about MT-01 (Zinke seat, western Montana). polymarket_direct is the price anchor. Kalshi and Polymarket related markets give a cross-venue check, including House control and Montana races. Wikipedia covers the district's partisan lean and past results, and resolution_source points to FEC.
2. Research parallel tool calls + 4 web research loops (Sonnet 5.5) · read raw by the forecasters
at a glance
RESEARCH DIGEST (built in code: tool summaries and each report's bottom line; the forecasters read the full tool outputs and reports)
Tools
- polymarket_direct: ## This Market's Polymarket Data **Will the Democratic Party win the MT-01 House seat?** - Current price (probability): 31.50% (live; bid 31% / ask 32%) - 7-day price change: -3.00% - 30-day price change: -6.00% - Total volume: $53,320 (USD notional) - Price range: 24.00% - 43.50% - Data points: 90 days
- resolution_source: already_resolved=unclear; matches_criteria=False; last_updated=2026-10-07 (smarter.vote); 2026-09-25 (Cook). The election is on November 3, 2026 and has not happened yet, so the named source (fec.gov) has no results. Secondary sources show an open seat after Republican Ryan Zinke retired in March 2026. The nominees are Aaron Flint (R, Trump-endorsed), Sam Forstag (D) and Nick Sheedy (L), and Ballo
- kalshi_related: 1 related markets / summaries. keyword 'Montana 1st district': ok | keyword 'MT-01': no matches | keyword 'House control 2026': no matches
- polymarket_related: Polymarket search over 3 keyword(s), kept 15 matches. keyword 'MT-01': 5 markets | keyword 'Montana House': 5 markets | keyword 'House control 2026': 5 markets
- wikipedia: Fetched 2 Wikipedia entries (0 missing pages).
Research loops, bottom lines
- current state: Flint is the Republican favorite in a district Trump won by 11 points in 2024. Both national parties are investing, all three major forecasters I found moved the race toward Democrats in late September and early October, and recent polling and fundraising show a close race. Nothing is decided before the Nov 3 vote, which is the only remaining scheduled event apart from the Trump visit.
- base rate: The outside view is a lean-Republican toss-up-ish race. Cook rates it Lean R, the other three forecasters were Likely R as of July, the polls are within the margin, and a model gives the Republican about 65%. Democrats have never won this seat, but it is an open seat in a favourable midterm environment.
- yes case: The YES case rests on three or four independent polls with Forstag within a point or two, a large favorability edge for him, a money race that is about even, and Cook, Sabato and Inside Elections all moving toward Democrats. The counterweight is that forecast models still give Flint about 61–65%, the district is R+5 and Trump won it by 11 points in 2024, and GOP outside money is heavier.
- no case: The strongest NO case rests on the status quo: Republicans have won this seat every time, and no independent high-quality poll shows Forstag ahead. Flint also has a roughly 5-to-1 outside-money edge, the Oct 2 FLIPR model gave him about 61%, and the Silver Bulletin, Cook and Sabato ratings were all Lean R or equivalent. The best the NO side can claim is a narrow edge in a race that polls as a tie, which is not a large cushion.
tools
| tool | status | time | items | summary |
|---|---|---|---|---|
| polymarket_direct | OK | 0.5s | 1 | ## This Market's Polymarket Data **Will the Democratic Party win the MT-01 House seat?** - Current price (probability): 31.50% (live; bid 31% / ask 32%) - 7-day price change: -3.00% - 30-day price change: -6.00% - Total volume: $53,320 (USD notional) - Price range: 24.00% - 43.50% - Data points: 90 |
| resolution_source | OK | 12.1s | 1 | already_resolved=unclear; matches_criteria=False; last_updated=2026-10-07 (smarter.vote); 2026-09-25 (Cook). The election is on November 3, 2026 and has not happened yet, so the named source (fec.gov) has no results. Secondary sources show an open seat after Republican Ryan Zinke retired in March 20 |
| kalshi_related | OK | 26.4s | 1 | 1 related markets / summaries. keyword 'Montana 1st district': ok | keyword 'MT-01': no matches | keyword 'House control 2026': no matches |
| polymarket_related | OK | 0.7s | 15 | Polymarket search over 3 keyword(s), kept 15 matches. keyword 'MT-01': 5 markets | keyword 'Montana House': 5 markets | keyword 'House control 2026': 5 markets |
| wikipedia | OK | 0.5s | 2 | Fetched 2 Wikipedia entries (0 missing pages). |
research loops
·
4/4 ok ·
17 searches ·
4 page reads
| dimension | status | time | searches | page reads | report |
|---|---|---|---|---|---|
| current state | OK | 20s | 5 | 0 | 4178 chars |
| base rate | OK | 16s | 4 | 0 | 3707 chars |
| yes case | OK | 24s | 4 | 2 | 6207 chars |
| no case | OK | 25s | 4 | 2 | 6121 chars |
report: current state
- [2026-10-14] The general-election field is set. Republican Aaron Flint, Democrat Sam Forstag, Libertarian Nick Sheedy and independent Kimberly Persico are listed on the ballot. This is an open seat because Rep. Ryan Zinke (R) is retiring. Ballotpedia's July list included Persico, but the October Wikipedia infobox and ballot-guide sources name only Flint, Forstag and Sheedy, so Persico's ballot status is unconfirmed. https://en.wikipedia.org/wiki/2026_United_States_House_of_Representatives_elections_in_Montana
- [2026-06-02] Primary results: Flint won the Republican primary with 50.1% (41,170 votes). Forstag won the Democratic primary with 37.3%, ahead of Ryan Busse. https://ballotexplained.com/races/montana/district-1
- [2026-03-02] Zinke announced his retirement two days before the filing deadline. He endorsed Flint, and Trump, the NRCC, Gov. Gianforte, Sen. Sheehy and House GOP leadership also back Flint. https://en.wikipedia.org/wiki/2026_United_States_House_of_Representatives_elections_in_Montana
- [2026-10-09] KULR reported that Trump will campaign for Flint in Montana. The rally's date and place are not in what I read; the article was updated 10-10 with the event timing. https://www.kulr8.com/elections/polling-gives-outlooks-for-upcoming-general-election-in-montana/article_e73de873-0981-54e3-bb4b-634e86040ad4.html
- [2026-10-09] Absentee ballots were mailed to Montana voters. Election Day is 2026-11-03 and the winner is decided by plurality, with no runoff. https://ballotexplained.com/races/montana/district-1
- [2026-09-28] Poll (NonStop Local/American Pulse, fielded Sept 19–24, 314 interviews in CD1) shows Flint and Forstag "virtually tied". It is a small sample, and I did not see the exact numbers. https://www.kulr8.com/elections/polling-gives-outlooks-for-upcoming-general-election-in-montana/article_e73de873-0981-54e3-bb4b-634e86040ad4.html
- [2026-09-25] Cook Political Report moved MT-01 from Likely R to Lean R. Cook's page dated 2026-10-09 still lists MT-01 among the Lean R seats. https://www.270towin.com/2026-house-election-predictions/ and https://www.cookpolitical.com/ratings/house-race-ratings
- [2026-09-29] Sabato's Crystal Ball moved MT-01 from Likely R to Leans R. [2026-10-01] Inside Elections moved it from Likely R to Lean R. The 270toWin listing says "Likely to Lean D" for Inside Elections, which looks like a typo for Lean R. https://www.270towin.com/2026-house-election-predictions/
- [2026-07-29] The DCCC put Forstag in Red to Blue and the NRCC put Flint in MAGA Majority. Ballotpedia says Forstag and Flint lead in polls, endorsements, fundraising and media attention. All four forecasters then rated the race Likely R. https://news.ballotpedia.org/2026/07/29/dccc-and-nrcc-both-target-open-seat-in-montanas-1st-congressional-district/
- [2026-06-30] FEC filings through June 30: Forstag raised $1.38M and had $550K cash on hand. Flint raised $1.30M and had $502K cash on hand. Later quarterly figures were not found. https://knowyourreps.io/races/2026/montana/district-1
- [2026-10-06] Another venue: Kalshi had Flint at 67% and Forstag at 33% as of Oct 6, per a third-party aggregator. https://predictionmarketspicks.com/midterms-2026/mt-01-house
- [2024 baseline] Trump carried the district 54–43. Zinke beat Tranel 52.3–44.6, while Tester (D) narrowly won the district in the Senate race (50–49). Cook PVI is about R+5. https://news.ballotpedia.org/2026/07/29/dccc-and-nrcc-both-target-open-seat-in-montanas-1st-congressional-district/
BOTTOM LINE: Flint is the Republican favorite in a district Trump won by 11 points in 2024. Both national parties are investing, all three major forecasters I found moved the race toward Democrats in late September and early October, and recent polling and fundraising show a close race. Nothing is decided before the Nov 3 vote, which is the only remaining scheduled event apart from the Trump visit.
NOT FOUND: exact numbers from the Sept 19–24 poll. Any independent public poll with a Flint or Forstag margin. FEC Q3 fundraising totals. The date and place of the Trump rally. Whether Persico qualified for the ballot. FEC or official results, which don't exist yet.
report: base rate
- [2026-09-25] Cook Political Report moved MT-01 from Likely R to Lean R. The seat is open, and the race is Forstag (D) against Flint (R). https://www.cookpolitical.com/house/race/483446
- [2026-07-29] As of July 21, Cook, DDHQ/The Hill, Inside Elections and Sabato all rated the race Likely R. The DCCC put Forstag in Red to Blue and the NRCC put Flint in MAGA Majority. Lean R from Cook on Sep 25 is the only later change I found. https://news.ballotpedia.org/2026/07/29/dccc-and-nrcc-both-target-open-seat-in-montanas-1st-congressional-district/
- [2026-09-28] 270toWin lists two public polls. American Pulse (9/28, n=314 LV) has Flint 46, Forstag 45. Rutgers-Eagleton (9/14, n=375 RV, ±6) has Flint 42, Forstag 41. The average is Flint 44, Forstag 43. Both are small samples. https://www.270towin.com/2026-house-polls/montana/district-1
- [2026-10-07] The smarter.vote model gives Flint a 65% modeled win probability, with an estimated margin of +3.0. It uses 5 polls and was generated Oct 2. This is an aggregator model with an unknown track record. https://smarter.vote/races/mt-house-01-2026/
- [2026-10-08] Fundraising is roughly even. Forstag has raised $1.4M and Flint $1.3M. https://knowyourreps.io/races/2026/montana/district-1
- [2024-11-05] Past results: Trump won the district 54–43 in 2024, a margin of about 11.5 points. Zinke won by 7.7 points (52.3–44.6). Tester (D) carried the district 50–49 for Senate. The district's Cook PVI is R+5. https://news.ballotpedia.org/2026/07/29/dccc-and-nrcc-both-target-open-seat-in-montanas-1st-congressional-district/
- [2026-03-04] Zinke announced his retirement on March 2, citing health. Sabato's Kyle Kondik noted that in the 2018 wave, a few Trump +10 districts flipped. He also said the retirement hints at a Democratic-leaning environment. https://dailymontanan.com/2026/03/04/zinkes-out-everyones-piling-in-whats-next-for-montanas-1st-congressional-district/
- [2022-2024] Cook's earlier analysis said Democrats have come within single digits five times since 1996 without winning the seat (2022 comment). The seat existed only from 2023, and the western seat has been R in both elections (2022 R+3, 2024 R+8). https://www.cookpolitical.com/analysis/house/montana-house/house-rating-change-mt-01-moves-likely-lean-republican
- [2026-06-02] Forstag won the Democratic primary with 37.4%, ahead of Busse (33.0%). Flint won the Republican primary with about 50% in a four-way field and has Trump's endorsement. https://smarter.vote/races/mt-house-01-2026/
- [2026-08-22] A PredictionEdge snapshot, roughly 53 days before this report, put Flint at about 60% and Forstag at about 43% in market odds. It is stale, and the two figures sum to more than 100. https://www.predictionedge.com/elections/us-house/montana-district-1-race-winner-by-party/
- Base rate: Democrats have not won a Montana House seat held by Republicans in this territory since the 1990s (the "white whale" framing from Cook). Open seats in R+5 districts, in a Democratic-leaning midterm environment under a Republican president, flip at meaningfully above normal rates. This is a qualitative point, and I did not compute a statistic.
BOTTOM LINE: The outside view is a lean-Republican toss-up-ish race. Cook rates it Lean R, the other three forecasters were Likely R as of July, the polls are within the margin, and a model gives the Republican about 65%. Democrats have never won this seat, but it is an open seat in a favourable midterm environment.
NOT FOUND: Current Inside Elections, Sabato and DDHQ ratings after July, Silver Bulletin/538-style district models, and any high-quality nonpartisan polls beyond the two listed. I did not search for this contract's own price.
report: yes case
YES means: the Democratic candidate (Sam Forstag) wins the Nov 3, 2026 MT-01 U.S. House election, as shown by credible reporting or FEC results.
- [2026-10-01] The one poll that meets NYT "select pollster" criteria is Rutgers-Eagleton. It was a statistical tie at Flint 42, Forstag 41, ±6. The Democratic-aligned PPP poll for The Bench (Sept 9–10, n=536 RV, ±4.2) had Forstag ahead 45–43. Silver Bulletin's FLIPR shows Forstag with a slight lead in current polling and a 38.8% win chance (Flint 61.2%). Its forecast is more pessimistic for Forstag than the polls because it also weights fundamentals and expert ratings. https://montanafreepress.org/2026/10/01/poll-fishing-in-montanas-hottest-house-race/
- [2026-09-14] In the Rutgers-Eagleton poll, Forstag's favorability was 41% favorable to 19% unfavorable. Flint's was 31% to 32%, with 19% having no opinion. Forstag led among women 50–39 and among ages 18–44 (about 49%). A candidate with a clear favorability edge in a tied race is the core YES case. The poll also found 9% preferred none of the candidates or someone else. https://montanafreepress.org/2026/09/14/flint-forstag-in-dead-heat-for-house-seat/
- [2026-09-28] The American Pulse poll is Republican-leaning and was the weakest of the three for Forstag. It still had him at 45.4 vs Flint's 45.9. Only 3.4% were undecided. Undecideds who leaned went 35.6% to Flint and 3.7% to Forstag. That favors Flint at the margin but the pool is tiny. In the same poll a generic Democrat got 36.5% and Forstag 45.4%, so Forstag is running far ahead of the generic Democratic label. https://www.montanarightnow.com/elections/aaron-flint-sam-forstag-nearly-tied-for-montana-congressional-district-1/article_96a2f7e1-334a-46c7-9a92-84ccc4c44171.html
- [2026-10-13] The Flathead Beacon, summarising Aug–Sept polling, says the candidates are within one to four points of each other. Forstag outraised Flint in Q2, $688K to $619K. Flint has the outside-money edge, over $1.2M against about $250K for Forstag. A Billings Gazette piece from about Oct 5 says Republicans in both top Montana races are raising less than Democratic or independent opponents. I could only see its headline. https://flatheadbeacon.com/2026/10/13/in-western-congressional-district-race-republican-aaron-flint-and-democrat-sam-forstag-are-locked-in-a-dead-heat/
- [2026-10-01] The GOP-aligned No Going Back PAC spent $743K on mailers against Forstag and $811K in total in September, mostly in a 17-day stretch from Sept 11. A $1.92M Butte/Missoula TV buy was also reported. Republicans are spending heavily in a seat they rated Likely R in July. That is a sign their own polling shows a close race. https://montanafreepress.org/2026/10/01/poll-fishing-in-montanas-hottest-house-race/
- [2026-10-09] Trump's popularity is falling, and gas and diesel prices are raising the cost of living. MTFP calls this "Montana's hottest race." Trump is expected to rally in the district this month, and that rally is in Flathead County, a Republican stronghold. Cost of living is the top issue for both candidates. Forstag is running on affordability, health care costs and Medicaid cuts, which are the issues the DCCC is advertising on. https://montanafreepress.org/2026/10/08/trump-on-the-stump-for-flint/ ; https://www.mtpr.org/montana-news/2026-10-09/western-district-house-candidates-say-affordability-is-their-top-concern
- [2026-10-13] In the Oct 13 televised debate, Forstag positioned himself as independent, criticising "my national party." Flint attacked him as a "paid lobbyist" and a socialist and linked him to AOC and Bernie Sanders. Forstag's blue-collar profile as a smokejumper and union leader is a way to hold the Tester-style crossover vote. The MTPR report says AOC and Sanders endorsements were scrubbed from his site, which shows he is trying to run as a moderate. https://montanafreepress.org/2026/10/13/sparks-fly-flint-forstag-house-debate/
- [2026-07-29] Tester, former Govs. Bullock and Racicot (a Republican) and the Montana AFL-CIO endorsed Forstag. Tester's win in this district in 2024 is the template. The tie to Racicot suggests crossover Republican support is possible. https://ballotexplained.com/races/montana/district-1
- [2026-06-25] The statewide environment is a counter-weight. A GOP-aligned GrayHouse poll had Trump at 53% approval statewide. Senate polls show Alme leading by 20 points or more. Inside Elections says the national environment is worsening for the GOP. The independent Bodnar also draws votes. [2026-10-12] The state Democratic chair resigned and endorsed Bodnar, which shows Democrats are split on the Senate race. The Senate race matters for ticket-splitting in MT-01 because the Montana electorate has voted for both parties at the top of the ticket before. https://insideelections.com/montana-senate-new-poll-confirms-gop-edge/ ; https://montanafreepress.org/2026/10/13/sparks-fly-flint-forstag-house-debate/
- [2026-10-14] Most likely path to YES: Forstag keeps the Tester-2024 coalition of Missoula, Bozeman and Butte, which the Beacon and polls say he leads. He wins independents and women. He hits a favorability edge of about 10 points to 22 points. A Democratic-leaning national midterm, with cost-of-living anger under a Republican president, then tips a seat where Flint has weak name ID. Prerequisites: the Libertarian (5%) draws more from Flint than from Forstag, Trump's visit does not raise rural turnout enough to offset this, and Democratic turnout holds despite the Senate split. https://montanafreepress.org/2026/09/14/flint-forstag-in-dead-heat-for-house-seat/
BOTTOM LINE: The YES case rests on three or four independent polls with Forstag within a point or two, a large favorability edge for him, a money race that is about even, and Cook, Sabato and Inside Elections all moving toward Democrats. The counterweight is that forecast models still give Flint about 61–65%, the district is R+5 and Trump won it by 11 points in 2024, and GOP outside money is heavier.
NOT FOUND: Q3 FEC totals for either candidate (due Oct 15), any poll after Sept 24, the Trump rally date, a Democratic internal poll with numbers beyond PPP, and any sign that Persico is on the ballot.
report: no case
YES means: the Democratic candidate (Sam Forstag) wins the MT-01 House seat in the Nov 3, 2026 election. The case below argues for NO, meaning Republican Aaron Flint, Libertarian Nick Sheedy or anyone else other than the Democrat wins.
- [2026-10-01] Silver Bulletin's FLIPR model gave Flint a 61.2% chance and Forstag 38.8%, even though the model had Forstag slightly ahead in current polling. The model weights ratings and fundamentals, which still lean R. https://montanafreepress.org/2026/10/01/poll-fishing-in-montanas-hottest-house-race/
- [2026-10-01] Only one of the three September polls, the Rutgers-Eagleton poll showing Flint 42, Forstag 41, met the NYT's "select pollster" criteria. The one poll showing a Forstag lead (PPP, Sept 9–10, 45–43, n=536) was commissioned by The Bench, a committee that invests in Democrats in GOP-leaning districts. The American Pulse poll (Flint 46, Forstag 45) is the other. So no independent high-quality poll shows Forstag ahead. https://montanafreepress.org/2026/10/01/poll-fishing-in-montanas-hottest-house-race/
- [2026-10-01] The Trump-backed No Going Back PAC spent $743K on mailers against Forstag, mostly in a 17-day stretch from Sept 11. Its September total was $811K. A separate $1.92M TV buy in the Butte and Missoula markets was reported on about Sept 17 (a consultant's account, not a filing). https://montanafreepress.org/2026/10/01/poll-fishing-in-montanas-hottest-house-race/ and https://www.fairfieldsuntimes.com/news/state/new-ads-and-an-infusion-of-cash-in-mt01-house-race/article_4eda3d0f-6efc-5ca1-8451-5fdad44fcbb8.html
- [2026-10-13] Outside spending favors Flint by about 5 to 1: more than $1.2M supports him, against about $250K for Forstag. Candidate fundraising is even, so the late air war tilts R. https://flatheadbeacon.com/2026/10/13/in-western-congressional-district-race-republican-aaron-flint-and-democrat-sam-forstag-are-locked-in-a-dead-heat/
- [2026-10-13] The Flathead Beacon says most forecasters give Flint the edge because of Montana's Republican strength and the electorate's recent unwillingness to split tickets. It also says Forstag would be the first Democrat to hold a Montana House seat in nearly three decades. https://flatheadbeacon.com/2026/10/13/in-western-congressional-district-race-republican-aaron-flint-and-democrat-sam-forstag-are-locked-in-a-dead-heat/
- [2026-09-22] The Rutgers-Eagleton poll of 839 registered voters (Aug 27–Sept 7) had Trump's Montana approval at 42% approve, 53% disapprove. That is weak for him, but it is still about 42% in a state he won with 58%. Undecideds in the Rutgers poll were few: 9% preferred someone else or none, and 2% would not vote. https://montanafreepress.org/2026/09/22/montana-voters-disapprove-state-direction-and-officials/ and https://dailyinterlake.com/news/2026/sep/16/polling-puts-flint-forstag-in-dead-heat-for-us-house-seat/
- [2026-10-02] In the American Pulse poll, undecided leaners broke 35.6% to Flint and 3.7% to Forstag, with 60.7% still undecided. Sheedy (Libertarian) polled 5.4%. The poll also showed a generic Democrat at 36.5% and a generic Republican at 45.8%. Forstag's named-candidate number (45.4%) is far above the generic Democratic baseline, so some of his support may be soft. https://www.montanarightnow.com/elections/aaron-flint-sam-forstag-nearly-tied-for-montana-congressional-district-1/article_96a2f7e1-334a-46c7-9a92-84ccc4c44171.html
- [2026-10-13] Montana Senate polling suggests the ticket-wide environment is not a Democratic wave. FiftyPlusOne's Oct 12 average has Republican Alme at 43.3%, independent Bodnar at 27.3% and Democrat Bankhead at 18.5%. The Democratic Senate nominee polling in the teens, with the opposition split, shows a weak statewide Democratic base for Forstag to ride. https://fiftyplusone.news/polls/senate/general/montana
- [2026-10-13] Trump rallied or was set to rally in Kalispell. The date was in flux on Oct 8, and a Helena Independent Record headline later says "confirmed for Wednesday" (Oct 14). Kalispell is in Flathead County, where Trump's vote share in 2024 was more than double Harris's. A final-weeks rally mobilizes the Republican base in the district's most Republican county. https://montanafreepress.org/2026/10/08/trump-on-the-stump-for-flint/
- [2026-10-13] The district's most recent electoral history shows no Democratic win. Zinke won in 2022 and 2024, and the 2024 baseline was Trump +11. In the same Rutgers poll, women favored Forstag 50–39 but men favored Flint 45–32, and Flint's support increases with age. Older voters turn out most in midterms, which helps Flint. https://dailyinterlake.com/news/2026/sep/16/polling-puts-flint-forstag-in-dead-heat-for-us-house-seat/
- [2026-10-13] The Oct 13 debate produced no clear shift: the DCCC and NRCC each claimed victory in press releases, and the coverage did not report a decisive moment. https://montanafreepress.org/2026/10/13/sparks-fly-flint-forstag-in-debate/ (the debate story is at https://montanafreepress.org/2026/10/13/sparks-fly-flint-forstag-house-debate/)
- [2026-10-06] A Lewis and Clark County judge struck down Montana's new absentee-ballot birth-year requirement on Oct 6, and the Secretary of State said no ballot will be rejected for it. That removes one possible source of ballot rejection, which would otherwise have hurt turnout. It is a neutral to slightly pro-Democratic factor, not a NO argument. https://dailymontanan.com/voter-guides/2026-general-election/
BOTTOM LINE: The strongest NO case rests on the status quo: Republicans have won this seat every time, and no independent high-quality poll shows Forstag ahead. Flint also has a roughly 5-to-1 outside-money edge, the Oct 2 FLIPR model gave him about 61%, and the Silver Bulletin, Cook and Sabato ratings were all Lean R or equivalent. The best the NO side can claim is a narrow edge in a race that polls as a tie, which is not a large cushion.
NOT FOUND: Q3 FEC filings (due Oct 15). Any poll fielded after the Sept 24 poll. House Majority PAC's actual fall ad spending. Whether Persico qualified for the ballot. Any result, since there is none yet.
3. Forecasters 2 draws · Opus 5.5 + GPT · plain mean
claude-opus-5-5 · high effort
50% conf
| Yes | 34% |
| No | 66% |
(0) Nothing has resolved. The election is November 3, 2026, and fec.gov and the media have no results, so Democrat Sam Forstag must actually beat Republican Aaron Flint in the open seat Zinke is leaving. (a) About 20 days remain until Election Day, and absentee ballots are already out. (b) The status quo is a lean-Republican race. Cook, Sabato and Inside Elections all moved MT-01 from Likely R to Lean R in late September and early October, Trump carried the district by about 11 points, and Democrats have not won a Montana House seat in nearly three decades. (c) NO path: Trump's Kalispell rally and a roughly 5-to-1 outside-money edge for Flint push undecideds and older midterm voters toward him, and he wins by 2–5 points in an R+5 seat with little ticket-splitting. (d) YES path: Forstag keeps the Tester-2024 coalition in Missoula, Bozeman and Butte, and his favorability edge (41/19 vs Flint's 31/32) holds. A Democratic-leaning national environment then tips a race that every September poll shows within 1–2 points; Polymarket prices Democratic House control at about 90%. The anchor is Polymarket at 31.5%, drifting down 6 points over 30 days. Silver Bulletin's FLIPR has Forstag at 38.8% and smarter.vote at about 35%, and three polls show a dead heat, so I nudge slightly above the market. Heavier GOP outside money and no independent poll showing Forstag ahead keep me well below 40%.
claude-opus-5-5 · high effort
55% conf
| Yes | 34% |
| No | 66% |
(0) Nothing is resolved. The election is November 3, 2026, FEC has no results, and Forstag (D) must win a plurality over Flint (R), Sheedy (L) and possibly Persico. (a) About 20 days remain until Election Day, with absentee ballots already mailed. (b) If nothing changes, Flint is a modest favorite. The district is R+5 and went Trump +11 in 2024, Republicans have held it in both elections since it was created, and the GOP has a roughly 5-to-1 outside-money edge. (c) NO: Trump's Kalispell rally and heavy GOP mail and TV spending lift rural and older turnout. Low-salience undecideds break Republican, as the American Pulse leaners did (35.6 to 3.7), and Flint wins by 3 to 5 points. (d) YES: Forstag holds his favorability edge (41/19 vs 31/32) and keeps the Tester-2024 coalition in Missoula, Bozeman and Butte. A Democratic-leaning national midterm (Polymarket has Democrats at 90.5% to take the House, Trump approval in Montana at 42/53) tips a race that polls as a tie. The anchor is Polymarket at 31.5%, with Kalshi at about 33% on Oct 6. Silver Bulletin FLIPR gives Forstag 38.8% and smarter.vote gives him about 35%, and Cook, Sabato and Inside Elections all moved to Lean R. Those models sit a bit above the market, but its 30-day drift down likely reflects the outside-money imbalance and the Trump visit. I land slightly above the market at 34%.
4. Final plain mean of 2 draws
34%
(52% confidence)
Yes: 34%
No: 66%
Mean of 2 draws (0.34, 0.34). (0) Nothing has resolved. The election is November 3, 2026, and fec.gov and the media have no results, so Democrat Sam Forstag must actually beat Republican Aaron Flint in the open seat Zinke is leaving. (a) About 20 days remain until Election Day, and absentee ballots are already out. (b) The status quo is a lean-Republican race. Cook, Sabato and Inside Elections all moved MT-01 from Likely R to Lean R in late September and early October, Trump carried the district by about 11 points, and Democrats have not won a Montana House seat in nearly three decades. (c) NO path: Trump's Kalispell rally and a roughly 5-to-1 outside-money edge for Flint push undecideds and older midterm voters toward him, and he wins by 2–5 points in an R+5 seat with little ticket-splitting. (d) YES path: Forstag keeps the Tester-2024 coalition in Missoula, Bozeman and Butte, and his favorability edge (41/19 vs Flint's 31/32) holds. A Democratic-leaning national environment then tips a race that every September poll shows within 1–2 points; Polymarket prices Democratic House control at about 90%. The anchor is Polymarket at 31.5%, drifting down 6 points over 30 days. Silver Bulletin's FLIPR has Forstag at 38.8% and smarter.vote at about 35%, and three polls show a dead heat, so I nudge slightly above the market. Heavier GOP outside money and no independent poll showing Forstag ahead keep me well below 40%.
Pipeline Timing
Total pipeline time: 53.3s
Per-tool research timings shown in the Research section above.