Short Answer

Maura Healey is expected to win the 2026 Massachusetts gubernatorial election, driven by her unopposed primary win and a substantial lead over Republican challenger Mike Minogue in August 2026 polling; the market prices her re-election at 94.1%.

1. Market Behavior & Drivers

The market's probability for a Republican victory in the 2026 Massachusetts gubernatorial election declined following the September 1 primary. After Mike Minogue secured the Republican nomination with 76.65% of the vote, the contract price fell from 6.7% before the primary to 5.4% a week later. This move suggests the market assesses Minogue as a weaker general election candidate against incumbent Maura Healey than the generic Republican alternative.
The contract has consistently traded at low probabilities, reflecting the baseline expectation of a Democratic hold in Massachusetts. The primary result clarified the general election matchup without fundamentally altering the race's dynamic. The lack of trading volume around the primary date indicates low conviction or participation as the market priced in the nomination news.
  • Since last update (~28d): Mike Minogue's model probability fell 1.2pp (model_led), widening the edge by 0.9pp.
  • Maura Healey's model probability rose 1.2pp; market probability fell 1.2pp, compressing the edge.
  • Confidence score increased significantly by 4.0pp to 9.0, reflecting improved certainty.
  • Maura Healey won her primary unopposed, positioning her for re-election.
  • Prediction markets and models project a strong Democratic victory.
  • August 2026 polling showed Healey with a double-digit lead.

Who Wins and Why

Outcome Market Model Why
Mike Minogue 6.9% 5.8% Mike Minogue won his primary but faces overwhelming odds in a strongly Democratic-leaning state.
Maura Healey 94.1% 94.2% Incumbent Maura Healey won her primary unopposed and holds a substantial double-digit lead in August polling.

Current Context

Governor Maura Healey and challenger Mike Minogue advanced from their September 1 primaries. Incumbent Governor Maura Healey (Democrat) won her primary unopposed [1]. On September 1, 2026, Mike Minogue secured the Republican primary with 76.65% of the vote, defeating Brian Shortsleeve, who received 23.35% [1][2][3]. Healey and Minogue will now face each other in the general election [2].
Prediction markets indicate Governor Healey with a dominant lead, though specific head-to-head polling is not yet widely available. As of early September 2026, prediction markets indicate strong favor for Governor Maura Healey over Mike Minogue [4][5][6]. Publicly available sources, including [6], do not yet list specific head-to-head general election polling between Healey and Minogue. Prediction markets such as Polymarket and Kalshi indicate Healey has a 95-97% probability of winning [4]. Decision Desk HQ forecasts a 99% probability of victory for Governor Healey [7].
General election debates focus on economics; voting begins in October. Key campaign themes for the general election include the cost of living in Massachusetts, economic management, and the political influence of President Donald Trump [8][2]. The general election is scheduled for November 3, 2026, with an early voting period running from October 17 to October 30, 2026 [9][10][11].
Sources (11)
  1. 1Mike Minogue beats Brian Shortsleeve to face Maura Healey – NBC Bostonnbcboston.com
  2. 2Healey, Minogue begin sprint to November's general electionbostonglobe.com
  3. 32026 Massachusetts Governor Live Election Results | DDHQvotes.decisiondeskhq.com
  4. 4Mass. Governor Race: Prediction Markets Favor Healeywbsm.com
  5. 5Appeals to unenrolled voters, affordability to continue in Mass. senate, guv races | WAMCwamc.org
  6. 62026 Polls: Massachusetts Governor - 270toWin270towin.com
  7. 72026 Massachusetts Governor Forecast | DDHQintegration-votes.decisiondeskhq.com
  8. 8Trump casts shadow over Minogue-Healey gubernatorial race - WCVBwcvb.com
  9. 9Upcoming Electionssec.state.ma.us
  10. 10Massachusetts elections 2026: Everything you need to know to vote | GBHwgbh.org
  11. 11Massachusetts gubernatorial and lieutenant gubernatorial election...ballotpedia.org

2. Price Chart

Historical Price (Probability)

Outcome probability
Date

3. Market Data

Contract Snapshot

For a specific party's contract, a "Yes" resolution occurs if that party wins the Massachusetts Governor election. Conversely, a "No" resolution occurs if that party does not win. The market resolves based on which party ultimately wins the election, which is scheduled to begin on November 3, 8:00 AM EST, with a maximum payout date of November 3, 2027.

Available Contracts

Market options and current pricing

Outcome bucket Yes (price) No (price) Last trade probability
Maura Healey $0.96 $0.06 94%
Mike Minogue $0.07 $0.94 7%

Market Discussion

The 2026 Massachusetts gubernatorial general election, scheduled for November 3, 2026, features incumbent Democratic Governor Maura Healey and Republican nominee Mike Minogue, who both secured primary victories on September 1, 2026 [1]. Prediction markets and election forecasts overwhelmingly favor Healey to win, with probabilities typically ranging from 95% to 99% as of early September 2026 [2]. Campaign discussions often focus on Healey's strategy of linking Minogue to Donald Trump, while Minogue emphasizes cost-of-living concerns and critiques Healey's first-term record [3].

Sources (3)
  1. 1Healey officially wins nomination, awaits GOP winnerbostonglobe.com
  2. 22026 Massachusetts Governor Forecast | DDHQintegration-votes.decisiondeskhq.com
  3. 3Mike Minogue beats Brian Shortsleeve to face Maura Healey – NBC Bostonnbcboston.com

4. Trust Index

Octagon Trust Index Kalshi 82 Good
How it adds up
Integrity80% of score84Good
Trade quality20% of score74Good

Includes the cost to trade: a $10,000 order can't be filled here because the order book is too thin.

Trust score82Good

Weighted blend with hard caps — a critically weak safety pillar, or a severe trading anomaly, caps the total regardless of the rest. Full methodology · About the Trust Index

Trust profile
Integrity4 screens run · 6 don't apply
Market integrity
84Good

Outcome is hard to influence

No suspicious activity on any screen

Screened clean
Large tradesNo single trade dominates the tape. Clear
Thin-volume movesNo significant move Clear
Size patternsTrade sizes look organic. Clear
2 screens not run
Outcome control · doesn't apply to this market type
Thin-leg conviction · doesn't apply to this market type
Info fairness
80Good

Structural prior — no screens apply

No suspicious activity on any screen

Screened clean
Information exposureNo concentrated group can know the outcome materially early. Clear
4 screens not run
Move vs. catalyst · doesn't apply to this market type
Longshot repricing · doesn't apply to this market type
Pre-broadcast certainty · doesn't apply to this market type
Cross-venue timing · doesn't apply to this market type
Resolution quality
92Strong

Resolution mechanism is dependable

No suspicious activity on any screen

Resolution rules read: Clear

Liquidity
76Tradeable

Fills fine at modest size

2 contracts · worst first

Maura Healey75
Tradeable · low confidence

Light recent trading — size may not fill near the screen price.

Book spread 1% vs realized 0%
Mike Minogue80
Tradeable · low confidence

Light recent trading — size may not fill near the screen price.

Book spread 17% vs realized 2%
Move quality
87Confirmed

Moves came with real volume

2 contracts · worst first

Mike Minogue87
Confirmed · high confidence

Volume confirms the move over 6h

Maura Healey—
No significant move (24h)

Price was stable over the last 24 hours.

Rule clarity
100Clear

Counts toward Resolution quality, not here

2 contracts · worst first

Maura Healey100
Clear · high confidence

All checks pass

objective outcome · Clearofficial source · Cleartime boundary · Clear
Mike Minogue100
Clear · high confidence

All checks pass

objective outcome · Clearofficial source · Cleartime boundary · Clear
Trade quality
74Good

Order book supports trading

Deep and tight enough to trade efficiently.

Outcome quality 76 (notional-weighted across 2 scored legs)

$100 order: 0.3c slippage (<1% of a 94.9c contract)

$1,000 order: 0.5c slippage (<1% of a 94.9c contract)

$10,000 order: book too thin to fill

Maura Healey75Market scoreLiquidity75Move quality–Rule clarity100
Why 75
Liquidity
75 · Tradeable · low confidence

Light recent trading — size may not fill near the screen price.

Book spread 1% vs realized 0%
Move quality
No significant move (24h)

Price was stable over the last 24 hours.

Rule clarity
100 · Clear · high confidence

All checks pass

objective outcome · Clearofficial source · Cleartime boundary · Clear
Mike Minogue80Market scoreLiquidity80Move quality87Rule clarity100
Why 80
Liquidity
80 · Tradeable · low confidence

Light recent trading — size may not fill near the screen price.

Book spread 17% vs realized 2%
Move quality
87 · Confirmed · high confidence

Volume confirms the move over 6h

Rule clarity
100 · Clear · high confidence

All checks pass

objective outcome · Clearofficial source · Cleartime boundary · Clear

underwriting_v1.4 · computed Sep 26, 2026

5. What do recent polls from September and October 2026 indicate about Maura Healey's lead over Mike Minogue?

Healey's Lead (August 2026 polls)19 to 23 percentage points [1][2][3]
Minogue's Primary Win DateSeptember 1, 2026 [4][5][6][7]
Healey's Projected Win ProbabilityOver 99% [1][8][9][10][11]
Public opinion polls conducted as of September 9, 2026, do not yet show specific head-to-head matchups for the November 3, 2026, general election between incumbent Maura Healey and Michael Minogue [10][11][12]. However, earlier polling from August 2026, prior to Minogue securing the GOP nomination, consistently indicated Maura Healey leading Mike Minogue by approximately 19 to 23 percentage points [1][2][3]. Michael Minogue won the Republican primary for the Massachusetts gubernatorial election on September 1, 2026, defeating Brian Shortsleeve [4][5][6][7].
Maura Healey is the clear frontrunner based on electoral forecasts. Incumbent Governor Maura Healey is widely considered the clear frontrunner against Republican Mike Minogue [3][13]. Prediction markets and forecasting models, including Pollsmax and Decision Desk HQ, currently project a very high probability, exceeding 99%, of Maura Healey winning the Massachusetts gubernatorial race [1][8][9][10][11]. These models predominantly favor Healey's re-election, attributing this to the state's strong Democratic lean and her consistent polling lead observed in prior periods [1][8][9].
Sources (13)
  1. 12026 Massachusetts Governor Forecast | Election Odds & Latest Pollspollsmax.com
  2. 2Minogue Leading Shortsleeve in GOP Governor Primary, Though...umass.edu
  3. 32026 Massachusetts gubernatorial election - Wikipediaen.wikipedia.org
  4. 42026 Massachusetts Governor Live Election Results | DDHQvotes.decisiondeskhq.com
  5. 5Massachusetts gubernatorial election, 2026 (September 1 Republican primary) - Ballotpediaballotpedia.org
  6. 6Michael Minogue - Ballotpediaballotpedia.org
  7. 7Massachusetts state executive official elections, 2026 - Ballotpediaballotpedia.org
  8. 8Will a Democrat Win the Massachusetts Governor Election?lines.com
  9. 9https://polymarket.com/tl/event/massachusetts-governor-winner-2026polymarket.com
  10. 102026 Massachusetts Governor Forecast | DDHQnewsnation-votes.decisiondeskhq.com
  11. 112026 Massachusetts Governor Markets | DDHQvotes.decisiondeskhq.com
  12. 122026 Massachusetts Governor Forecast | DDHQintegration-votes.decisiondeskhq.com
  13. 13Governor's race set between Healey and Minogue - Boston - WHDHwhdh.com

6. How might national political trends, particularly the influence of Donald Trump, affect Mike Minogue's performance among unenrolled voters?

Primary Victory DateSeptember 1, 2026 (Michael Minogue) [1][2][3][4]
Polling Lead (Healey vs. Minogue)Healey 56% to Minogue 31% (June 2026) [5][6]
Democratic Victory Probability94-96% (September 2026) [7][8][9][10]
National political trends' impact on Minogue's unenrolled voter performance is unspecified. Available research does not provide specific evidence regarding how national political trends, such as the influence of Donald Trump, are affecting Michael Minogue's performance among unenrolled voters in the 2026 Massachusetts gubernatorial race [1][11][6]. Prediction markets indicate that Massachusetts is a strong Democratic-leaning state, and that national political trends like Trump's influence have limited impact on changing the projected outcome of the gubernatorial election [7][8].
Minogue secured the Republican nomination, but faces strong incumbent opposition. Michael Minogue won the Republican primary for Governor of Massachusetts on September 1, 2026 [1][2][3][4]. He campaigned as a political outsider, focusing on auditing the state budget and criticizing the current 'one-party system' [3].
Current projections heavily favor incumbent Healey due to partisanship and incumbency. Pre-general election polling from June 2026 indicated that incumbent Democrat Maura Healey led Minogue 56% to 31% in a hypothetical head-to-head matchup [5][6]. Prediction markets overwhelmingly favor the incumbent, Democrat Maura Healey, to win the 2026 gubernatorial election, with implied probabilities for a Democratic victory consistently around 94–96% as of September 2026 [7][8][9][10]. This outlook is primarily driven by voters' partisanship and Healey's incumbency [7][8][9][10].
Sources (11)
  1. 1Michael Minogue - Ballotpediaballotpedia.org
  2. 2Mike Minogue wins Republican nomination for Mass. governoryoutube.com
  3. 3Michael Minogue - 2026 Republican Endorsed Candidate... - LinkedInlinkedin.com
  4. 4MassGOP Statement on Entrance of Michael Minogue Into 2026...massgop.com
  5. 5Election 2026 Polls - Dave Leip's Atlas of U.S. Presidential Electionsuselectionatlas.org
  6. 6Massachusetts gubernatorial and lieutenant gubernatorial election, 2026 - Ballotpediaballotpedia.org
  7. 7https://polymarket.com/tl/event/massachusetts-governor-winner-2026polymarket.com
  8. 8Will a Democrat Win the Massachusetts Governor Election?lines.com
  9. 9Massachusetts Governor winner? Odds — Democratic 93¢predictionhunt.com
  10. 10Governor Markets | Prediction Edgepredictionedge.com
  11. 11Massachusetts elections, 2026 - Ballotpediaballotpedia.org

7. What potential campaign events or missteps before November 3, 2026 could significantly alter the polling gap between Maura Healey and Mike Minogue?

Healey Polling Lead19 to 25 percentage points [1][2]
Healey Typical Polling51% to 56% [3][4]
Minogue Typical Polling27% to 32% [3][4]
Maura Healey holds a significant polling lead over Mike Minogue. Recent surveys indicate a consistent gap of 19 to 25 percentage points in the lead-up to the November 3, 2026 election. Incumbent Democratic Governor Maura Healey typically polls between 51% and 56%, while Minogue consistently trails with 27% to 32% [3][4]. For Minogue to significantly alter this gap, analysts suggest he would need to successfully energize the Republican base, secure a significant portion of independent or unenrolled voters, and potentially benefit from major policy failures by Governor Healey or dramatic shifts in economic conditions [5][6].
Specific events to alter the polling gap are not yet detailed. While analysts have identified broad categories of conditions that could potentially narrow the gap, the available information does not detail specific campaign events or missteps by either candidate that are expected to directly lead to these outcomes before the 2026 election [5][6].
Sources (6)
  1. 12026 Massachusetts Governor Polls | Polling Average & Latest Pollspollsmax.com
  2. 2Minogue Leading Shortsleeve in GOP Governor Primary, Though...umass.edu
  3. 3Election 2026 Polls - Dave Leip's Atlas of U.S. Presidential Electionsuselectionatlas.org
  4. 4Election 2026 Polls - Dave Leip's Atlas of U.S. Presidential Electionsuselectionatlas.org
  5. 5Will a Democrat Win the Massachusetts Governor Election?lines.com
  6. 6Governor's race set between Healey and Minogue - Boston - WHDHwhdh.com

8. What is the schedule for major gubernatorial poll releases in Massachusetts for October 2026?

Public Poll Schedule (October 2026)None set [1]
Published Poll Calendar (October 2026)None published [2]
General Election DateNovember 3, 2026 [2]
There is no publicly available schedule for major gubernatorial poll releases in Massachusetts for October 2026 [1]. The official listings do not show predetermined dates for when these polls will be released [1].
Individual news organizations and academic institutions determine polling release schedules, not state officials [2]. This absence of a state-controlled schedule means no centralized calendar exists for poll releases [2]. The Massachusetts gubernatorial general election is scheduled for November 3, 2026 [2].
Sources (2)
  1. 12026 Massachusetts Governor Forecast | DDHQintegration-votes.decisiondeskhq.com
  2. 2Upcoming Electionssec.state.ma.us

9. What do the latest campaign finance filings reveal about the fundraising disparity between Maura Healey and Mike Minogue?

Maura Healey Win Probability (Decision Desk HQ)>99% (September 9, 2026) [1][2]
Michael Minogue Primary Vote Percentage76.65% (September 1, 2026) [3]
Prediction Market Implied Probability (Democratic Win)94-96% [4][5][6]
Public reporting lacks explicit comparative fundraising data between Healey and Minogue. As of September 9, 2026, public reporting does not explicitly synthesize specific comparative figures detailing a fundraising disparity between Maura Healey and Mike Minogue [7][8]. While Michael Minogue's official campaign finance data is registered with the Massachusetts Office of Campaign and Political Finance (OCPF), direct comparative details with Healey are not publicly available [7][8]. Additionally, campaign finance information for Minogue was not available from OpenSecrets as of September 2026 [8]. Michael Minogue did claim he would spend $2 billion to unseat Governor Maura Healey, though he later clarified this statement was a joke [9][10].
Despite limited financial data, prediction markets overwhelmingly favor Maura Healey. Despite the absence of detailed comparative finance figures, prediction markets consistently indicate a strong favor for incumbent Democrat Maura Healey to win the 2026 Massachusetts gubernatorial election, with implied probabilities for a Democratic victory consistently ranging between 94% and 96% [4][5][6]. As of September 9, 2026, Decision Desk HQ further reinforces this trend, forecasting Maura Healey with a >99% probability of winning [1][2]. Michael Minogue secured the Republican primary for Massachusetts Governor on September 1, 2026, with 76.65% of the vote [3].
Sources (10)
  1. 12026 Massachusetts Governor Forecast | DDHQintegration-votes.decisiondeskhq.com
  2. 22026 Massachusetts Governor Forecast | DDHQnewsnation-votes.decisiondeskhq.com
  3. 32026 Massachusetts Governor Live Election Results | DDHQvotes.decisiondeskhq.com
  4. 4Will a Democrat Win the Massachusetts Governor Election?lines.com
  5. 5Massachusetts Governor Election Winner - Polymarketpolymarket.com
  6. 6Massachusetts Governor winner? Odds — Democratic 93¢predictionhunt.com
  7. 7Michael Minogue (19431) - OCPF - Registered Filersocpf.us
  8. 8Michael Minogue - Ballotpediaballotpedia.org
  9. 9GOP's Mike Minogue to spend up to $2 billion on... - Boston Heraldbostonherald.com
  10. 10GOP candidate Mike Minogue says he is joking about spending $2B...boston.com

10. What Could Change the Odds

Key Catalysts

The Massachusetts gubernatorial general election is scheduled for November 3, 2026 [1][2][3][4][5]. Incumbent Democrat Maura Healey won her party's nomination unopposed on September 1, 2026 [1]. Businessman Mike Minogue secured the Republican nomination on the same day, September 1, 2026, following the primary elections [1][4][6][7].
As of September 9, 2026, Governor Maura Healey remains the heavy favorite for re-election, with Decision Desk HQ forecasting her win probability to exceed 99% [8][9]. Public polling consistently categorized Healey as a significant front-runner, showing her leading potential Republican opponents by double digits prior to the primary [1][10][11]. Recent polling data indicates Governor Healey maintains a substantial lead, often exceeding 20 points, over potential Republican challengers in hypothetical matchups [8][12][4].
Key remaining dates for the 2026 election cycle include the voter registration deadline on October 24, 2026 [2][3]. The early voting period runs from October 17–30, 2026 [2][3].

Key Dates & Catalysts

  • Expiration: November 03, 2027
  • Closes: November 03, 2027
Sources (12)
  1. 1Healey officially wins nomination, awaits GOP winnerbostonglobe.com
  2. 2Mass. 2026 primary election guide: Deadlines, candidates, more - WCVBwcvb.com
  3. 3Upcoming Electionssec.state.ma.us
  4. 4Massachusetts gubernatorial and lieutenant gubernatorial election...ballotpedia.org
  5. 5Governor of Massachusetts - Ballotpediaballotpedia.org
  6. 62026 Massachusetts Governor Live Election Results | DDHQvotes.decisiondeskhq.com
  7. 7Massachusetts gubernatorial election, 2026 (September 1...ballotpedia.org
  8. 82026 Massachusetts Governor Forecast | DDHQintegration-votes.decisiondeskhq.com
  9. 92026 Massachusetts Governor Markets | DDHQintegration-votes.decisiondeskhq.com
  10. 10‘I am not afraid of hard things’: Republican Minogue readies for face-off with Healey | GBHwgbh.org
  11. 112026 Massachusetts gubernatorial election - Wikipediaen.wikipedia.org
  12. 12Election 2026 Polls - Dave Leip's Atlas of U.S. Presidential Electionsuselectionatlas.org