{
  "_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-53NPW6YWF1",
  "slug": "ohio-senate-election-winner",
  "question": "Will the winner of the Ohio Senate election be decided by DATE?",
  "category": "politics",
  "event_type": "BINARY",
  "ladder_distribution": null,
  "tags": [
    "elections",
    "politics",
    "ohio",
    "senate-2026",
    "us-midterms",
    "electoral-outcomes"
  ],
  "catalyst_types": [],
  "catalyst_dates": [],
  "editorial_notes": "These markets track the outcome of the 2026 Ohio U.S. Senate special election on November 3, 2026. Polymarket structures the event across two layers: partisan outcome markets and individual candidate markets. The partisan contracts price Democratic or Republican victory; the candidate contracts price each named individual's probability of winning. All markets resolve via Polymarket's UMA Optimistic Oracle.",
  "venues_covered": [
    "polymarket"
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  "primary_market_id": "CM-MKT-QF2FVK3N28",
  "current_primary_mark": {
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    "implied_probability": 0.53
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  "created_at": "2026-07-23T21:11:14.426158+00:00",
  "updated_at": "2026-07-23T21:11:14.426158+00:00",
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      "event_id": "CM-EVT-53NPW6YWF1",
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      "question": "Will the Democrats win the Ohio Senate race in 2026?",
      "description": "This market will resolve according to the winner of the 2026 Ohio U.S. Senate special election currently scheduled for November 3, inclusive of any run-offs.\n\nA candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.\n\nCandidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.\n\nThe resolution source for ",
      "contract_type": "binary",
      "settlement_currency": "USDC",
      "underlying_reference": "Sherrod Brown (D): The named party's nominee winning the 2026 Ohio U.S. Senate special election on November 3, 2026, or any subsequent runoff, as determined by UMA Optimistic Oracle.",
      "close_at": null,
      "resolve_at": null,
      "status": "open",
      "resolution": {
        "rules_raw": "This market will resolve according to the winner of the 2026 Ohio U.S. Senate special election currently scheduled for November 3, inclusive of any run-offs.\n\nA candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.\n\nCandidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.\n\nThe resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.",
        "arbitration_model": "uma_oracle",
        "proposer": "managed_whitelist",
        "source": null,
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        "sources": [
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            "provenance": "clearmarket_editorial"
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            "name": "Fox News",
            "url": null,
            "provenance": "clearmarket_editorial"
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          {
            "name": "NBC",
            "url": null,
            "provenance": "clearmarket_editorial"
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        "source_commitment": "named",
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        "caps": [
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        "applied_factors": 7
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      "implied_probability": 0.53,
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      "tags": [
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      "question": "Will the Republicans win the Ohio Senate race in 2026?",
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      "underlying_reference": "Jon Husted (R): The named party's nominee winning the 2026 Ohio U.S. Senate special election on November 3, 2026, or any subsequent runoff, as determined by UMA Optimistic Oracle.",
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      "resolution": {
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      "question": "Will Person A win the Ohio Senate race in 2026?",
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      "close_at": null,
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      "status": "closed",
      "resolution": {
        "rules_raw": "This market will resolve according to the winner of the 2026 Ohio U.S. Senate special election currently scheduled for November 3, inclusive of any run-offs.\n\nA candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.\n\nCandidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.\n\nThe resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.",
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      "rcg": {
        "grade": "C",
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        "caps": [
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        "applied_factors": 7
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      "implied_probability": 0,
      "volume_24h_usd": 0,
      "volume_total_usd": 0,
      "settlement_style": "occurrence",
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      "tags": [
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    {
      "market_id": "CM-MKT-4990FVRQM5",
      "event_id": "CM-EVT-53NPW6YWF1",
      "platform": "polymarket",
      "platform_market_id": "0x13a579878df028fd788dfe007d9be45c049418c966873767cb6cd63eba6d0991",
      "question": "Will Person B win the Ohio Senate race in 2026?",
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      "close_at": null,
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      "status": "closed",
      "resolution": {
        "rules_raw": "This market will resolve according to the winner of the 2026 Ohio U.S. Senate special election currently scheduled for November 3, inclusive of any run-offs.\n\nA candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.\n\nCandidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.\n\nThe resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.",
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            "provenance": "clearmarket_editorial"
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      "close_at": null,
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      "resolution": {
        "rules_raw": "This market will resolve according to the winner of the 2026 Ohio U.S. Senate special election currently scheduled for November 3, inclusive of any run-offs.\n\nA candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.\n\nCandidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.\n\nThe resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.",
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    {
      "market_id": "CM-MKT-YPM439CVM1",
      "event_id": "CM-EVT-53NPW6YWF1",
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      "platform_market_id": "0x03898b1b57e18f9baba3f01389a39e0bda5c63050ef92147ab730e0eaba914e0",
      "question": "Will Person D win the Ohio Senate race in 2026?",
      "description": "This market will resolve according to the winner of the 2026 Ohio U.S. Senate special election currently scheduled for November 3, inclusive of any run-offs.\n\nA candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.\n\nCandidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.\n\nThe resolution source for ",
      "contract_type": "binary",
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      "close_at": null,
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      "status": "closed",
      "resolution": {
        "rules_raw": "This market will resolve according to the winner of the 2026 Ohio U.S. Senate special election currently scheduled for November 3, inclusive of any run-offs.\n\nA candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.\n\nCandidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.\n\nThe resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.",
        "arbitration_model": "uma_oracle",
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      "market_id": "CM-MKT-7K9D8W9DR4",
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      "question": "Will Person E win the Ohio Senate race in 2026?",
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      "close_at": null,
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        "rules_raw": "This market will resolve according to the winner of the 2026 Ohio U.S. Senate special election currently scheduled for November 3, inclusive of any run-offs.\n\nA candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.\n\nCandidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.\n\nThe resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.",
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