{
  "_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."
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  "event_id": "CM-EVT-D0T3BF05P9",
  "slug": "massachusetts-senate-election-winner",
  "question": "Will a specific candidate win the Massachusetts Senate election?",
  "category": "politics",
  "event_type": "BINARY",
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  "tags": [
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    "elections",
    "massachusetts",
    "us-senate",
    "2026-election",
    "partisan-outcome"
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  "catalyst_types": [],
  "catalyst_dates": [],
  "editorial_notes": "These markets track the outcome of the 2026 Massachusetts U.S. Senate race. Polymarket structures the event across party-outcome and candidate-specific binary contracts, all resolved via Polymarket's UMA Optimistic Oracle. The party contracts and individual candidate contracts are linked: the Democrat contract and the winning candidate contract resolve jointly. The Associated Press call or official state certification determines resolution.",
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