{
  "_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-7RNJ53L5L5",
  "slug": "ma-02-house-election-winner",
  "question": "Will the Democratic Party win the MA-02 House seat?",
  "category": "politics",
  "event_type": "BINARY",
  "ladder_distribution": null,
  "tags": [
    "elections",
    "politics",
    "massachusetts",
    "house-of-representatives",
    "2026",
    "us-midterms"
  ],
  "catalyst_types": [],
  "catalyst_dates": [],
  "editorial_notes": "These markets track the November 2026 general election outcome for Massachusetts's 2nd Congressional District. Polymarket structures the event across both party-level and candidate-level binaries, letting traders price partisan control and individual candidacies simultaneously. The markets are internally linked: candidate contracts sum to the same probability as their respective party contract. Resolution follows Federal Election Commission certification or major news organization calls, verified through Polymarket's UMA Optimistic Oracle.",
  "venues_covered": [
    "polymarket"
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  "primary_market_id": "CM-MKT-YXHF6WBG24",
  "current_primary_mark": {
    "last_price": 0.94,
    "implied_probability": 0.94
  },
  "created_at": "2026-06-03T14:52:43.794845+00:00",
  "updated_at": "2026-06-03T14:52:43.794845+00:00",
  "markets": [
    {
      "market_id": "CM-MKT-S5DWLMZ1Y5",
      "event_id": "CM-EVT-7RNJ53L5L5",
      "platform": "polymarket",
      "platform_market_id": "0x034341c948e36836242f23998e50ce3c64d931da00b5eaa264baaa8c15f51690",
      "question": "Will the Republican Party win the MA-02 House seat?",
      "description": "This market will resolve according to the party of the candidate who wins the MA-02 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The midterm elections will take place on November 4, 2026.\n\n​A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these p",
      "contract_type": "binary",
      "settlement_currency": "USDC",
      "underlying_reference": "The Federal Election Commission or major news organizations' official calls of the MA-02 House race results on November 4, 2026.",
      "close_at": "2026-11-03T00:00:00Z",
      "resolve_at": "2026-11-03T00:00:00Z",
      "status": "open",
      "resolution": {
        "rules_raw": "This market will resolve according to the party of the candidate who wins the MA-02 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The midterm elections will take place on November 4, 2026.\n\n​A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the House elections are conclusively called by this market's resolution sources.\n\nThis market will resolve based on the result of the election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the United States government, specifically the Federal Election Commission (https://www.fec.gov/).",
        "arbitration_model": "uma_oracle",
        "proposer": "managed_whitelist",
        "source": null,
        "source_status": "no_committed_source",
        "source_citation": "https://www.fec.gov/",
        "sources": null,
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        "score": 54,
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        "applied_factors": 7
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      "last_price": 0.06,
      "implied_probability": 0.06,
      "volume_24h_usd": 0,
      "volume_total_usd": 12281.106983,
      "settlement_style": "occurrence",
      "direction": "occurrence",
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      "question_id": null,
      "also_on": null,
      "tags": [
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        "ma-02",
        "republican",
        "republican party"
      ],
      "eligibility_screens": null
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    {
      "market_id": "CM-MKT-YXHF6WBG24",
      "event_id": "CM-EVT-7RNJ53L5L5",
      "platform": "polymarket",
      "platform_market_id": "0xcd7134ef350bf68b4ddf01731edaccd417b81e75d893deab0a7ccad596cb3536",
      "question": "Will the Democratic Party win the MA-02 House seat?",
      "description": "This market will resolve according to the party of the candidate who wins the MA-02 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The midterm elections will take place on November 4, 2026.\n\n​A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these p",
      "contract_type": "binary",
      "settlement_currency": "USDC",
      "underlying_reference": "The Federal Election Commission or major news organizations' official calls of the MA-02 House race results on November 4, 2026.",
      "close_at": "2026-11-03T00:00:00Z",
      "resolve_at": "2026-11-03T00:00:00Z",
      "status": "open",
      "resolution": {
        "rules_raw": "This market will resolve according to the party of the candidate who wins the MA-02 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The midterm elections will take place on November 4, 2026.\n\n​A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the House elections are conclusively called by this market's resolution sources.\n\nThis market will resolve based on the result of the election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the United States government, specifically the Federal Election Commission (https://www.fec.gov/).",
        "arbitration_model": "uma_oracle",
        "proposer": "managed_whitelist",
        "source": null,
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        "sources": null,
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        "score": 54,
        "caps": [
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        "applied_factors": 7
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      "last_price": 0.94,
      "implied_probability": 0.94,
      "volume_24h_usd": 0,
      "volume_total_usd": 32694.835854000004,
      "settlement_style": "occurrence",
      "direction": "occurrence",
      "threshold": null,
      "question_id": null,
      "also_on": null,
      "tags": [
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        "election",
        "house",
        "ma-02"
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      "eligibility_screens": null
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  "resolution_log": [],
  "_provenance": {
    "source": "clearmarket.fyi",
    "ref": "CM-EVT-7RNJ53L5L5",
    "terms": "Attribution required. clearmarket.fyi"
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}