{
  "_notice": {
    "type": "free_key_offer",
    "message": "Free and anonymous access is staying. If this endpoint is in your pipeline, a free key adds advance notice before any schema change or deprecation. POST /v1/keys {\"email\": \"you@firm.com\"} — nothing else required. Something broken or missing? hello@clearmarket.fyi reaches a human.",
    "docs": "https://clearmarket.fyi/for-data/",
    "policy": "This field is additive and its shape will not change."
  },
  "event_id": "CM-EVT-PQTNNBLM61",
  "slug": "massachusetts-governor-republican-primary-winner",
  "question": "Will a Republican win the Massachusetts Governor Primary?",
  "category": "politics",
  "event_type": "BINARY",
  "ladder_distribution": null,
  "tags": [
    "politics",
    "elections",
    "2026",
    "massachusetts",
    "republican-primary",
    "governor-race"
  ],
  "catalyst_types": [],
  "catalyst_dates": [],
  "editorial_notes": "These markets track the winner of the Massachusetts Governor Republican primary, scheduled for September 1, 2026. Polymarket structures the event as parallel binary contracts, one per named candidate. Each contract resolves via Polymarket's UMA Optimistic Oracle against the Massachusetts Republican Party's official primary results. Placeholder candidates signal the field remains open to late entrants before the filing deadline.",
  "venues_covered": [
    "polymarket"
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  "primary_market_id": "CM-MKT-7XCVKPDR16",
  "current_primary_mark": {
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    "implied_probability": 0.001
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  "created_at": "2026-07-23T21:11:14.426158+00:00",
  "updated_at": "2026-07-23T21:11:14.426158+00:00",
  "markets": [
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      "market_id": "CM-MKT-7XCVKPDR16",
      "event_id": "CM-EVT-PQTNNBLM61",
      "platform": "polymarket",
      "platform_market_id": "0x36796df689a799e37af4db95c281bebd0f0fb370c25c0874a39a2184d92f7231",
      "question": "Will Mike Kennealy win the 2026 Massachusetts Governor Republican primary election?",
      "description": "This market will resolve according to the winner of the Republican Primary for Governor of Massachusetts, scheduled to take place on September 1, 2026. Resolution will be based on the overall winner of the primary, including any potential second round or run-off.\n\nIf no 2026 Massachusetts Gubernatorial Republican Primary takes place, this market will resolve to “Other.”\n\nThe resolution source for this market will be the first official announcement of the results from the Massachusetts Republican Party; however, an overwhelming consensus of credible reporting may suffice.",
      "contract_type": "binary",
      "settlement_currency": "USDC",
      "underlying_reference": "Mike Kennealy: The Massachusetts Republican Party's official primary results announcement on September 1, 2026, or credible reporting consensus thereof, determines the winner.",
      "close_at": "2026-09-01T00:00:00Z",
      "resolve_at": "2026-09-01T00:00:00Z",
      "status": "open",
      "resolution": {
        "rules_raw": "This market will resolve according to the winner of the Republican Primary for Governor of Massachusetts, scheduled to take place on September 1, 2026. Resolution will be based on the overall winner of the primary, including any potential second round or run-off.\n\nIf no 2026 Massachusetts Gubernatorial Republican Primary takes place, this market will resolve to “Other.”\n\nThe resolution source for this market will be the first official announcement of the results from the Massachusetts Republican Party; however, an overwhelming consensus of credible reporting may suffice.",
        "arbitration_model": "uma_oracle",
        "proposer": "managed_whitelist",
        "source": null,
        "source_status": "platform_named",
        "source_citation": null,
        "sources": [
          {
            "name": "Massachusetts Republican Party",
            "url": null,
            "provenance": "clearmarket_editorial"
          },
          {
            "name": "credible reporting",
            "url": null,
            "provenance": "clearmarket_editorial"
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        "source_of_record": "Massachusetts Republican Party",
        "source_mechanism": "precedence",
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        "source_quality": null,
        "source_commitment": "named",
        "source_commitment_subtype": "named",
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      "rcg": {
        "grade": "A",
        "score": 81,
        "caps": [],
        "applied_factors": 6
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      "implied_probability": 0.001,
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      "tags": [
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    {
      "market_id": "CM-MKT-6QLS7DK5L9",
      "event_id": "CM-EVT-PQTNNBLM61",
      "platform": "polymarket",
      "platform_market_id": "0xb98ab55ac15d1154e6455b1a886841103128c8a60a610a662df28b383e6233cb",
      "question": "Will Michael Minogue win the 2026 Massachusetts Governor Republican primary election?",
      "description": "This market will resolve according to the winner of the Republican Primary for Governor of Massachusetts, scheduled to take place on September 1, 2026. Resolution will be based on the overall winner of the primary, including any potential second round or run-off.\n\nIf no 2026 Massachusetts Gubernatorial Republican Primary takes place, this market will resolve to “Other.”\n\nThe resolution source for this market will be the first official announcement of the results from the Massachusetts Republican Party; however, an overwhelming consensus of credible reporting may suffice.",
      "contract_type": "binary",
      "settlement_currency": "USDC",
      "underlying_reference": "Michael Minogue: The Massachusetts Republican Party's official primary results announcement on September 1, 2026, or credible reporting consensus thereof, determines the winner.",
      "close_at": "2026-09-01T00:00:00Z",
      "resolve_at": "2026-09-01T00:00:00Z",
      "status": "open",
      "resolution": {
        "rules_raw": "This market will resolve according to the winner of the Republican Primary for Governor of Massachusetts, scheduled to take place on September 1, 2026. Resolution will be based on the overall winner of the primary, including any potential second round or run-off.\n\nIf no 2026 Massachusetts Gubernatorial Republican Primary takes place, this market will resolve to “Other.”\n\nThe resolution source for this market will be the first official announcement of the results from the Massachusetts Republican Party; however, an overwhelming consensus of credible reporting may suffice.",
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            "provenance": "clearmarket_editorial"
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            "provenance": "clearmarket_editorial"
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        "score": 81,
        "caps": [],
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      "question": "Will Brian Shortsleeve win the 2026 Massachusetts Governor Republican primary election?",
      "description": "This market will resolve according to the winner of the Republican Primary for Governor of Massachusetts, scheduled to take place on September 1, 2026. Resolution will be based on the overall winner of the primary, including any potential second round or run-off.\n\nIf no 2026 Massachusetts Gubernatorial Republican Primary takes place, this market will resolve to “Other.”\n\nThe resolution source for this market will be the first official announcement of the results from the Massachusetts Republican Party; however, an overwhelming consensus of credible reporting may suffice.",
      "contract_type": "binary",
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      "underlying_reference": "Brian Shortsleeve: The Massachusetts Republican Party's official primary results announcement on September 1, 2026, or credible reporting consensus thereof, determines the winner.",
      "close_at": "2026-09-01T00:00:00Z",
      "resolve_at": "2026-09-01T00:00:00Z",
      "status": "open",
      "resolution": {
        "rules_raw": "This market will resolve according to the winner of the Republican Primary for Governor of Massachusetts, scheduled to take place on September 1, 2026. Resolution will be based on the overall winner of the primary, including any potential second round or run-off.\n\nIf no 2026 Massachusetts Gubernatorial Republican Primary takes place, this market will resolve to “Other.”\n\nThe resolution source for this market will be the first official announcement of the results from the Massachusetts Republican Party; however, an overwhelming consensus of credible reporting may suffice.",
        "arbitration_model": "uma_oracle",
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        "source_of_record": "Massachusetts Republican Party",
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        "score": 81,
        "caps": [],
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    {
      "market_id": "CM-MKT-0YPJYF09L5",
      "event_id": "CM-EVT-PQTNNBLM61",
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      "platform_market_id": "0x02d1c8a8c1a44386cf9888184c8d03ff0f43193fab15f37b8d1b7ce5a2826ae4",
      "question": "Will another candidate win the 2026 Massachusetts Governor Republican primary election?",
      "description": "This market will resolve according to the winner of the Republican Primary for Governor of Massachusetts, scheduled to take place on September 1, 2026. Resolution will be based on the overall winner of the primary, including any potential second round or run-off.\n\nIf no 2026 Massachusetts Gubernatorial Republican Primary takes place, this market will resolve to “Other.”\n\nThe resolution source for this market will be the first official announcement of the results from the Massachusetts Republican Party; however, an overwhelming consensus of credible reporting may suffice.",
      "contract_type": "binary",
      "settlement_currency": "USDC",
      "underlying_reference": "Other: The Massachusetts Republican Party's official primary results announcement on September 1, 2026, or credible reporting consensus thereof, determines the winner.",
      "close_at": "2026-09-01T00:00:00Z",
      "resolve_at": "2026-09-01T00:00:00Z",
      "status": "closed",
      "resolution": {
        "rules_raw": "This market will resolve according to the winner of the Republican Primary for Governor of Massachusetts, scheduled to take place on September 1, 2026. Resolution will be based on the overall winner of the primary, including any potential second round or run-off.\n\nIf no 2026 Massachusetts Gubernatorial Republican Primary takes place, this market will resolve to “Other.”\n\nThe resolution source for this market will be the first official announcement of the results from the Massachusetts Republican Party; however, an overwhelming consensus of credible reporting may suffice.",
        "arbitration_model": "uma_oracle",
        "proposer": "managed_whitelist",
        "source": null,
        "source_status": "platform_named",
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        "sources": [
          {
            "name": "Massachusetts Republican Party",
            "url": null,
            "provenance": "clearmarket_editorial"
          },
          {
            "name": "credible reporting",
            "url": null,
            "provenance": "clearmarket_editorial"
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        "source_of_record": "Massachusetts Republican Party",
        "source_mechanism": "precedence",
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        "source_commitment": "named",
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      "rcg": {
        "grade": "A",
        "score": 81,
        "caps": [],
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      "tags": [
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    {
      "market_id": "CM-MKT-5KD44HF8T3",
      "event_id": "CM-EVT-PQTNNBLM61",
      "platform": "polymarket",
      "platform_market_id": "0xbb415f4d4bf050c2c0ffc7e609e50c770da6c3a1af00cb04601126fd4976569c",
      "question": "Will Candidate A win the 2026 Massachusetts Governor Republican primary election?",
      "description": "This market will resolve according to the winner of the Republican Primary for Governor of Massachusetts, scheduled to take place on September 1, 2026. Resolution will be based on the overall winner of the primary, including any potential second round or run-off.\n\nIf no 2026 Massachusetts Gubernatorial Republican Primary takes place, this market will resolve to “Other.”\n\nThe resolution source for this market will be the first official announcement of the results from the Massachusetts Republican Party; however, an overwhelming consensus of credible reporting may suffice.",
      "contract_type": "binary",
      "settlement_currency": "USDC",
      "underlying_reference": "Candidate A: The Massachusetts Republican Party's official primary results announcement on September 1, 2026, or credible reporting consensus thereof, determines the winner.",
      "close_at": "2026-09-01T00:00:00Z",
      "resolve_at": "2026-09-01T00:00:00Z",
      "status": "closed",
      "resolution": {
        "rules_raw": "This market will resolve according to the winner of the Republican Primary for Governor of Massachusetts, scheduled to take place on September 1, 2026. Resolution will be based on the overall winner of the primary, including any potential second round or run-off.\n\nIf no 2026 Massachusetts Gubernatorial Republican Primary takes place, this market will resolve to “Other.”\n\nThe resolution source for this market will be the first official announcement of the results from the Massachusetts Republican Party; however, an overwhelming consensus of credible reporting may suffice.",
        "arbitration_model": "uma_oracle",
        "proposer": "managed_whitelist",
        "source": null,
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        "source_of_record": "Massachusetts Republican Party",
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        "caps": [],
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      "market_id": "CM-MKT-D9QKWGWFD3",
      "event_id": "CM-EVT-PQTNNBLM61",
      "platform": "polymarket",
      "platform_market_id": "0x242a3ba1226c307987fbcb4f1accc88a1783a0f1c18fd31fc9d717a16e129df2",
      "question": "Will Candidate B win the 2026 Massachusetts Governor Republican primary election?",
      "description": "This market will resolve according to the winner of the Republican Primary for Governor of Massachusetts, scheduled to take place on September 1, 2026. Resolution will be based on the overall winner of the primary, including any potential second round or run-off.\n\nIf no 2026 Massachusetts Gubernatorial Republican Primary takes place, this market will resolve to “Other.”\n\nThe resolution source for this market will be the first official announcement of the results from the Massachusetts Republican Party; however, an overwhelming consensus of credible reporting may suffice.",
      "contract_type": "binary",
      "settlement_currency": "USDC",
      "underlying_reference": "Candidate B: The Massachusetts Republican Party's official primary results announcement on September 1, 2026, or credible reporting consensus thereof, determines the winner.",
      "close_at": "2026-09-01T00:00:00Z",
      "resolve_at": "2026-09-01T00:00:00Z",
      "status": "closed",
      "resolution": {
        "rules_raw": "This market will resolve according to the winner of the Republican Primary for Governor of Massachusetts, scheduled to take place on September 1, 2026. Resolution will be based on the overall winner of the primary, including any potential second round or run-off.\n\nIf no 2026 Massachusetts Gubernatorial Republican Primary takes place, this market will resolve to “Other.”\n\nThe resolution source for this market will be the first official announcement of the results from the Massachusetts Republican Party; however, an overwhelming consensus of credible reporting may suffice.",
        "arbitration_model": "uma_oracle",
        "proposer": "managed_whitelist",
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            "provenance": "clearmarket_editorial"
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        "source_of_record": "Massachusetts Republican Party",
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        "caps": [],
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      "tags": [
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    {
      "market_id": "CM-MKT-SFDHTBKZN6",
      "event_id": "CM-EVT-PQTNNBLM61",
      "platform": "polymarket",
      "platform_market_id": "0x16bcb72120fccea1e2919aa16186798adcf239b7ca71ce3eef8e2e9a71f0db0a",
      "question": "Will Candidate C win the 2026 Massachusetts Governor Republican primary election?",
      "description": "This market will resolve according to the winner of the Republican Primary for Governor of Massachusetts, scheduled to take place on September 1, 2026. Resolution will be based on the overall winner of the primary, including any potential second round or run-off.\n\nIf no 2026 Massachusetts Gubernatorial Republican Primary takes place, this market will resolve to “Other.”\n\nThe resolution source for this market will be the first official announcement of the results from the Massachusetts Republican Party; however, an overwhelming consensus of credible reporting may suffice.",
      "contract_type": "binary",
      "settlement_currency": "USDC",
      "underlying_reference": "Candidate C: The Massachusetts Republican Party's official primary results announcement on September 1, 2026, or credible reporting consensus thereof, determines the winner.",
      "close_at": "2026-09-01T00:00:00Z",
      "resolve_at": "2026-09-01T00:00:00Z",
      "status": "closed",
      "resolution": {
        "rules_raw": "This market will resolve according to the winner of the Republican Primary for Governor of Massachusetts, scheduled to take place on September 1, 2026. Resolution will be based on the overall winner of the primary, including any potential second round or run-off.\n\nIf no 2026 Massachusetts Gubernatorial Republican Primary takes place, this market will resolve to “Other.”\n\nThe resolution source for this market will be the first official announcement of the results from the Massachusetts Republican Party; however, an overwhelming consensus of credible reporting may suffice.",
        "arbitration_model": "uma_oracle",
        "proposer": "managed_whitelist",
        "source": null,
        "source_status": "platform_named",
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        "sources": [
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            "url": null,
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            "provenance": "clearmarket_editorial"
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        "source_of_record": "Massachusetts Republican Party",
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        "caps": [],
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      "tags": [
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    {
      "market_id": "CM-MKT-M1X7B5TB50",
      "event_id": "CM-EVT-PQTNNBLM61",
      "platform": "polymarket",
      "platform_market_id": "0x68d0b3eb3ce5396070ee3a766b294174962f4ef91855071ad5c634c443dbdac2",
      "question": "Will Candidate D win the 2026 Massachusetts Governor Republican primary election?",
      "description": "This market will resolve according to the winner of the Republican Primary for Governor of Massachusetts, scheduled to take place on September 1, 2026. Resolution will be based on the overall winner of the primary, including any potential second round or run-off.\n\nIf no 2026 Massachusetts Gubernatorial Republican Primary takes place, this market will resolve to “Other.”\n\nThe resolution source for this market will be the first official announcement of the results from the Massachusetts Republican Party; however, an overwhelming consensus of credible reporting may suffice.",
      "contract_type": "binary",
      "settlement_currency": "USDC",
      "underlying_reference": "Candidate D: The Massachusetts Republican Party's official primary results announcement on September 1, 2026, or credible reporting consensus thereof, determines the winner.",
      "close_at": "2026-09-01T00:00:00Z",
      "resolve_at": "2026-09-01T00:00:00Z",
      "status": "closed",
      "resolution": {
        "rules_raw": "This market will resolve according to the winner of the Republican Primary for Governor of Massachusetts, scheduled to take place on September 1, 2026. Resolution will be based on the overall winner of the primary, including any potential second round or run-off.\n\nIf no 2026 Massachusetts Gubernatorial Republican Primary takes place, this market will resolve to “Other.”\n\nThe resolution source for this market will be the first official announcement of the results from the Massachusetts Republican Party; however, an overwhelming consensus of credible reporting may suffice.",
        "arbitration_model": "uma_oracle",
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            "url": null,
            "provenance": "clearmarket_editorial"
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            "provenance": "clearmarket_editorial"
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        "source_of_record": "Massachusetts Republican Party",
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      "rcg": {
        "grade": "A",
        "score": 81,
        "caps": [],
        "applied_factors": 6
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      "settlement_style": "touch",
      "direction": null,
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      "question_id": null,
      "also_on": null,
      "tags": [
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    {
      "market_id": "CM-MKT-0XVFWRVFS0",
      "event_id": "CM-EVT-PQTNNBLM61",
      "platform": "polymarket",
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      "question": "Will Candidate E win the 2026 Massachusetts Governor Republican primary election?",
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      "deadline_at": "2026-09-01T00:00:00Z",
      "occurred_basis": "deadline",
      "final_price": null,
      "recorded_at": "2026-07-06",
      "source": "platform_api",
      "source_ref": null
    }
  ],
  "_provenance": {
    "source": "clearmarket.fyi",
    "ref": "CM-EVT-PQTNNBLM61",
    "terms": "Attribution required. clearmarket.fyi"
  }
}