{
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    "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-J620PJQLH6",
  "slug": "kxsenatemad-26",
  "question": "Will the Massachusetts Democratic Senate nominee be determined by September 15, 2026?",
  "category": "politics",
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  "tags": [
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    "massachusetts-senate",
    "democratic-nominee",
    "us-election-2026",
    "primary-election",
    "electoral-politics"
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  "catalyst_types": [],
  "catalyst_dates": [],
  "editorial_notes": "These markets track which candidate wins the Massachusetts Democratic Senate primary. Each market is a separate binary on a named candidate: Markey, Rikleen, Moulton, or Pressley. At most one can resolve yes. All four resolve via Kalshi staff determination against the September 2026 primary result.",
  "venues_covered": [
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  "created_at": "2026-07-06T00:30:45.836226+00:00",
  "updated_at": "2026-07-06T00:30:45.836226+00:00",
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      "event_id": "CM-EVT-J620PJQLH6",
      "platform": "kalshi",
      "platform_market_id": "KXSENATEMAD-26-EMAR",
      "question": "Will Ed Markey be the Democratic nominee for the Senate in Massachusetts?",
      "description": "Ed Markey",
      "contract_type": "binary",
      "settlement_currency": "USD",
      "underlying_reference": "Ed Markey: Kalshi staff determination of whether the named candidate becomes the Democratic nominee for Senate in Massachusetts, resolved by September 15, 2026.",
      "close_at": "2026-11-03T15:00:00Z",
      "resolve_at": "2026-09-15T14:00:00Z",
      "status": "open",
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        "rules_raw": "If Ed Markey wins the nomination for the Democratic Party to contest the 2026 Senate Massachusetts Senate seat, then the market resolves to Yes.",
        "arbitration_model": "kalshi_staff",
        "proposer": "platform_staff",
        "source": "Republican Party",
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    {
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      "event_id": "CM-EVT-J620PJQLH6",
      "platform": "kalshi",
      "platform_market_id": "KXSENATEMAD-26-ARIK",
      "question": "Will Alexander Rikleen be the Democratic nominee for the Senate in Massachusetts?",
      "description": "Alexander Rikleen",
      "contract_type": "binary",
      "settlement_currency": "USD",
      "underlying_reference": "Alexander Rikleen: Kalshi staff determination of whether the named candidate becomes the Democratic nominee for Senate in Massachusetts, resolved by September 15, 2026.",
      "close_at": "2026-11-03T15:00:00Z",
      "resolve_at": "2026-09-15T14:00:00Z",
      "status": "open",
      "resolution": {
        "rules_raw": "If Alexander Rikleen wins the nomination for the Democratic Party to contest the 2026 Senate Massachusetts Senate seat, then the market resolves to Yes.",
        "arbitration_model": "kalshi_staff",
        "proposer": "platform_staff",
        "source": "Republican Party",
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      "tags": [
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      "platform_market_id": "KXSENATEMAD-26-SMOU",
      "question": "Will Seth Moulton be the Democratic nominee for the Senate in Massachusetts?",
      "description": "Seth Moulton",
      "contract_type": "binary",
      "settlement_currency": "USD",
      "underlying_reference": "Seth Moulton: Kalshi staff determination of whether the named candidate becomes the Democratic nominee for Senate in Massachusetts, resolved by September 15, 2026.",
      "close_at": "2026-11-03T15:00:00Z",
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      "event_id": "CM-EVT-J620PJQLH6",
      "platform": "kalshi",
      "platform_market_id": "KXSENATEMAD-26-APRE",
      "question": "Will Ayanna Pressley be the Democratic nominee for the Senate in Massachusetts?",
      "description": "Ayanna Pressley",
      "contract_type": "binary",
      "settlement_currency": "USD",
      "underlying_reference": "Ayanna Pressley: Kalshi staff determination of whether the named candidate becomes the Democratic nominee for Senate in Massachusetts, resolved by September 15, 2026.",
      "close_at": "2026-11-03T15:00:00Z",
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        "arbitration_model": "kalshi_staff",
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