{
  "_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-39Y2BB24Y8",
  "slug": "kxlosereelectionrsen-2026",
  "question": "How many Republican senators will lose reelection in 2026?",
  "category": "politics",
  "event_type": "BINARY",
  "ladder_distribution": null,
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    "electoral-outcomes",
    "political-forecasting"
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  "catalyst_types": [],
  "catalyst_dates": [],
  "editorial_notes": "These markets track how many incumbent Republican senators lose reelection in the 2026 cycle. Kalshi structures the event as six discrete count tiers: exactly 0, 1, 2, 3, 4, or 5-or-more seats flipped. Each tier is a separate binary contract, letting traders express a full probability distribution across outcomes. Resolution relies on Kalshi staff determination using Senate Parliamentarian-reported results by December 31, 2026.",
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  "primary_market_id": "CM-MKT-6FN1QFN645",
  "current_primary_mark": {
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    "implied_probability": 0.36
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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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      "question": "Will exactly 2 the Senate Republicans lose re-election in 2026?",
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        "rules_raw": "If exactly 3 members of the Senate Republicans lose re-election in 2026, then the market resolves to Yes.\n\nMembers count as losing re-election if they actively seek re-election (by filing candidacy or appearing on ballot) but fail to win. This includes losses in primaries, general elections, runoffs, retention elections, or recalls. Members who retire, withdraw before primaries, die, resign, or are disqualified do not count as losses. If redistricting forces two group members against each other, the loser counts. Members who switch parties after issuance remain part of the original group. If a member loses their party primary but wins as an independent, they did not lose re-election.",
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