{
  "_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-7NDD9LJZJ0",
  "slug": "kxmayorchi-27",
  "question": "Will there be a Chicago mayoral election winner by 2027?",
  "category": "politics",
  "event_type": "BINARY",
  "ladder_distribution": null,
  "tags": [
    "politics",
    "chicago-politics",
    "mayoral-election",
    "2028-resolution",
    "us-municipal",
    "electoral-outcome"
  ],
  "catalyst_types": [],
  "catalyst_dates": [],
  "editorial_notes": "These markets track the outcome of the 2027 Chicago mayoral election. Kalshi lists seven named candidates as discrete binary contracts, each resolving on the winner's vote share. All seven markets settle via Kalshi staff determination, using Cook County Clerk certified results as the authoritative source. The resolve date is February 23, 2027, preceding the close date, which is a known data artifact.",
  "venues_covered": [
    "kalshi"
  ],
  "primary_market_id": "CM-MKT-F3PKGG6XM5",
  "current_primary_mark": {
    "last_price": 0.47,
    "implied_probability": 0.47
  },
  "created_at": "2026-07-06T00:30:45.836226+00:00",
  "updated_at": "2026-07-06T00:30:45.836226+00:00",
  "markets": [
    {
      "market_id": "CM-MKT-D86MNZRW72",
      "event_id": "CM-EVT-7NDD9LJZJ0",
      "platform": "kalshi",
      "platform_market_id": "KXMAYORCHI-27-BJOH",
      "question": "Who will win Chicago Mayoral Election?",
      "description": "Brandon Johnson",
      "contract_type": "binary",
      "settlement_currency": "USD",
      "underlying_reference": "Brandon Johnson: The named candidate's vote share in the Chicago mayoral election is determined by the Cook County Clerk's official certified results, with resolution on February 23, 2027.",
      "close_at": "2028-02-23T15:00:00Z",
      "resolve_at": "2027-02-23T15:00:00Z",
      "status": "open",
      "resolution": {
        "rules_raw": "If Brandon Johnson wins Chicago Mayoral Election in 2027, then the market resolves to Yes.",
        "arbitration_model": "kalshi_staff",
        "proposer": "platform_staff",
        "source": "relevant county clerk or board of elections",
        "source_status": "platform_named",
        "source_citation": "https://kalshi.com/",
        "sources": [
          {
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            "url": "https://kalshi.com/",
            "provenance": "platform_api"
          },
          {
            "name": "Attorney General of the United States",
            "url": "https://www.justice.gov/ag",
            "provenance": "platform_api"
          },
          {
            "name": "relevant city/municipal clerk",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
          },
          {
            "name": "in hierarchical order: the relevant state Secretary of State or chief election officer",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
          },
          {
            "name": "the Federal Election Commission",
            "url": "https://www.fec.gov",
            "provenance": "platform_api"
          },
          {
            "name": "state board of elections or canvassing board",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
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          {
            "name": "The Source Agencies are",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
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        "source_of_record": "relevant county clerk or board of elections",
        "source_mechanism": "precedence",
        "source_type": null,
        "source_quality": "authoritative",
        "source_commitment": "named",
        "source_commitment_subtype": "named",
        "source_hedge_text": null
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      "rcg": {
        "grade": "A",
        "score": 91,
        "caps": [],
        "applied_factors": 7
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      "last_price": 0.071,
      "implied_probability": 0.071,
      "volume_24h_usd": 0,
      "volume_total_usd": 182.0085,
      "settlement_style": "occurrence",
      "direction": "occurrence",
      "threshold": null,
      "question_id": null,
      "also_on": null,
      "tags": [
        "brandon johnson",
        "chicago",
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        "mayor"
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      "eligibility_screens": [
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      "platform": "kalshi",
      "platform_market_id": "KXMAYORCHI-27-REMA",
      "question": "Who will win Chicago Mayoral Election?",
      "description": "Rahm Emanuel",
      "contract_type": "binary",
      "settlement_currency": "USD",
      "underlying_reference": "Rahm Emanuel: The named candidate's vote share in the Chicago mayoral election is determined by the Cook County Clerk's official certified results, with resolution on February 23, 2027.",
      "close_at": "2028-02-23T15:00:00Z",
      "resolve_at": "2027-02-23T15:00:00Z",
      "status": "open",
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        "rules_raw": "If Rahm Emanuel wins Chicago Mayoral Election in 2027, then the market resolves to Yes.",
        "arbitration_model": "kalshi_staff",
        "proposer": "platform_staff",
        "source": "relevant county clerk or board of elections",
        "source_status": "platform_named",
        "source_citation": "https://kalshi.com/",
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            "url": "https://kalshi.com/",
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          {
            "name": "Attorney General of the United States",
            "url": "https://www.justice.gov/ag",
            "provenance": "platform_api"
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          {
            "name": "relevant city/municipal clerk",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
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          {
            "name": "in hierarchical order: the relevant state Secretary of State or chief election officer",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
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          {
            "name": "the Federal Election Commission",
            "url": "https://www.fec.gov",
            "provenance": "platform_api"
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          {
            "name": "state board of elections or canvassing board",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
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            "url": "https://kalshi.com/",
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        "score": 91,
        "caps": [],
        "applied_factors": 7
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      "volume_24h_usd": 0,
      "volume_total_usd": 807.0846,
      "settlement_style": "occurrence",
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    {
      "market_id": "CM-MKT-DC9J5JT4L6",
      "event_id": "CM-EVT-7NDD9LJZJ0",
      "platform": "kalshi",
      "platform_market_id": "KXMAYORCHI-27-KBUC",
      "question": "Who will win Chicago Mayoral Election?",
      "description": "Kam Buckner",
      "contract_type": "binary",
      "settlement_currency": "USD",
      "underlying_reference": "Kam Buckner: The named candidate's vote share in the Chicago mayoral election is determined by the Cook County Clerk's official certified results, with resolution on February 23, 2027.",
      "close_at": "2028-02-23T15:00:00Z",
      "resolve_at": "2027-02-23T15:00:00Z",
      "status": "open",
      "resolution": {
        "rules_raw": "If Kam Buckner wins Chicago Mayoral Election in 2027, then the market resolves to Yes.",
        "arbitration_model": "kalshi_staff",
        "proposer": "platform_staff",
        "source": "relevant county clerk or board of elections",
        "source_status": "platform_named",
        "source_citation": "https://kalshi.com/",
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            "url": "https://kalshi.com/",
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          {
            "name": "Attorney General of the United States",
            "url": "https://www.justice.gov/ag",
            "provenance": "platform_api"
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          {
            "name": "relevant city/municipal clerk",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
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            "name": "in hierarchical order: the relevant state Secretary of State or chief election officer",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
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          {
            "name": "the Federal Election Commission",
            "url": "https://www.fec.gov",
            "provenance": "platform_api"
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          {
            "name": "state board of elections or canvassing board",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
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            "url": "https://kalshi.com/",
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      "rcg": {
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        "score": 91,
        "caps": [],
        "applied_factors": 7
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      "last_price": 0.016,
      "implied_probability": 0.016,
      "volume_24h_usd": 0,
      "volume_total_usd": 14.24,
      "settlement_style": "occurrence",
      "direction": "occurrence",
      "threshold": null,
      "question_id": null,
      "also_on": null,
      "tags": [
        "chicago",
        "election",
        "kam buckner",
        "mayor"
      ],
      "eligibility_screens": [
        {
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          "screen_version": "v1",
          "status": "not_eligible",
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          "bucket": null,
          "screened_at": "2026-06-12"
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    },
    {
      "market_id": "CM-MKT-3VXMRSH2P1",
      "event_id": "CM-EVT-7NDD9LJZJ0",
      "platform": "kalshi",
      "platform_market_id": "KXMAYORCHI-27-JHOL",
      "question": "Who will win Chicago Mayoral Election?",
      "description": "Joe Holberg",
      "contract_type": "binary",
      "settlement_currency": "USD",
      "underlying_reference": "Joe Holberg: The named candidate's vote share in the Chicago mayoral election is determined by the Cook County Clerk's official certified results, with resolution on February 23, 2027.",
      "close_at": "2028-02-23T15:00:00Z",
      "resolve_at": "2027-02-23T15:00:00Z",
      "status": "open",
      "resolution": {
        "rules_raw": "If Joe Holberg wins Chicago Mayoral Election in 2027, then the market resolves to Yes.",
        "arbitration_model": "kalshi_staff",
        "proposer": "platform_staff",
        "source": "relevant county clerk or board of elections",
        "source_status": "platform_named",
        "source_citation": "https://kalshi.com/",
        "sources": [
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            "name": "relevant county clerk or board of elections",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
          },
          {
            "name": "Attorney General of the United States",
            "url": "https://www.justice.gov/ag",
            "provenance": "platform_api"
          },
          {
            "name": "relevant city/municipal clerk",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
          },
          {
            "name": "in hierarchical order: the relevant state Secretary of State or chief election officer",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
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          {
            "name": "the Federal Election Commission",
            "url": "https://www.fec.gov",
            "provenance": "platform_api"
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          {
            "name": "state board of elections or canvassing board",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
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            "url": "https://kalshi.com/",
            "provenance": "platform_api"
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        ],
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        "source_mechanism": "precedence",
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      "rcg": {
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        "score": 91,
        "caps": [],
        "applied_factors": 7
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      "last_price": 0.05,
      "implied_probability": 0.05,
      "volume_24h_usd": 0,
      "volume_total_usd": 44.9315,
      "settlement_style": "occurrence",
      "direction": "occurrence",
      "threshold": null,
      "question_id": null,
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      "tags": [
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        "election",
        "joe holberg",
        "mayor"
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    {
      "market_id": "CM-MKT-351H0YJ5H9",
      "event_id": "CM-EVT-7NDD9LJZJ0",
      "platform": "kalshi",
      "platform_market_id": "KXMAYORCHI-27-PVAL",
      "question": "Who will win Chicago Mayoral Election?",
      "description": "Paul Vallas",
      "contract_type": "binary",
      "settlement_currency": "USD",
      "underlying_reference": "Paul Vallas: The named candidate's vote share in the Chicago mayoral election is determined by the Cook County Clerk's official certified results, with resolution on February 23, 2027.",
      "close_at": "2028-02-23T15:00:00Z",
      "resolve_at": "2027-02-23T15:00:00Z",
      "status": "open",
      "resolution": {
        "rules_raw": "If Paul Vallas wins Chicago Mayoral Election in 2027, then the market resolves to Yes.",
        "arbitration_model": "kalshi_staff",
        "proposer": "platform_staff",
        "source": "relevant county clerk or board of elections",
        "source_status": "platform_named",
        "source_citation": "https://kalshi.com/",
        "sources": [
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            "name": "relevant county clerk or board of elections",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
          },
          {
            "name": "Attorney General of the United States",
            "url": "https://www.justice.gov/ag",
            "provenance": "platform_api"
          },
          {
            "name": "relevant city/municipal clerk",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
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          {
            "name": "in hierarchical order: the relevant state Secretary of State or chief election officer",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
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          {
            "name": "the Federal Election Commission",
            "url": "https://www.fec.gov",
            "provenance": "platform_api"
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            "name": "state board of elections or canvassing board",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
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            "url": "https://kalshi.com/",
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        "caps": [],
        "applied_factors": 7
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      "last_price": 0.11,
      "implied_probability": 0.11,
      "volume_24h_usd": 0,
      "volume_total_usd": 91.9578,
      "settlement_style": "occurrence",
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      "threshold": null,
      "question_id": null,
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      "tags": [
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        "election",
        "mayor",
        "paul vallas"
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      "eligibility_screens": [
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          "screen_version": "v1",
          "status": "not_eligible",
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          "bucket": null,
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    },
    {
      "market_id": "CM-MKT-FD09K5Y0T0",
      "event_id": "CM-EVT-7NDD9LJZJ0",
      "platform": "kalshi",
      "platform_market_id": "KXMAYORCHI-27-MPAP",
      "question": "Who will win Chicago Mayoral Election?",
      "description": "Maria Pappas",
      "contract_type": "binary",
      "settlement_currency": "USD",
      "underlying_reference": "Maria Pappas: The named candidate's vote share in the Chicago mayoral election is determined by the Cook County Clerk's official certified results, with resolution on February 23, 2027.",
      "close_at": "2028-02-23T15:00:00Z",
      "resolve_at": "2027-02-23T15:00:00Z",
      "status": "open",
      "resolution": {
        "rules_raw": "If Maria Pappas wins Chicago Mayoral Election in 2027, then the market resolves to Yes.",
        "arbitration_model": "kalshi_staff",
        "proposer": "platform_staff",
        "source": "relevant county clerk or board of elections",
        "source_status": "platform_named",
        "source_citation": "https://kalshi.com/",
        "sources": [
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            "name": "relevant county clerk or board of elections",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
          },
          {
            "name": "Attorney General of the United States",
            "url": "https://www.justice.gov/ag",
            "provenance": "platform_api"
          },
          {
            "name": "relevant city/municipal clerk",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
          },
          {
            "name": "in hierarchical order: the relevant state Secretary of State or chief election officer",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
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            "name": "the Federal Election Commission",
            "url": "https://www.fec.gov",
            "provenance": "platform_api"
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          {
            "name": "state board of elections or canvassing board",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
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            "provenance": "platform_api"
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        "score": 91,
        "caps": [],
        "applied_factors": 7
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      "last_price": 0.01,
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      "volume_24h_usd": 0,
      "volume_total_usd": 56.5265,
      "settlement_style": "occurrence",
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      "threshold": null,
      "question_id": null,
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      "tags": [
        "chicago",
        "election",
        "maria pappas",
        "mayor"
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      "event_id": "CM-EVT-7NDD9LJZJ0",
      "platform": "kalshi",
      "platform_market_id": "KXMAYORCHI-27-AGIA",
      "question": "Who will win Chicago Mayoral Election?",
      "description": "Alexi Giannoulias",
      "contract_type": "binary",
      "settlement_currency": "USD",
      "underlying_reference": "Alexi Giannoulias: The named candidate's vote share in the Chicago mayoral election is determined by the Cook County Clerk's official certified results, with resolution on February 23, 2027.",
      "close_at": "2028-02-23T15:00:00Z",
      "resolve_at": "2027-02-23T15:00:00Z",
      "status": "open",
      "resolution": {
        "rules_raw": "If Alexi Giannoulias wins Chicago Mayoral Election in 2027, then the market resolves to Yes.",
        "arbitration_model": "kalshi_staff",
        "proposer": "platform_staff",
        "source": "relevant county clerk or board of elections",
        "source_status": "platform_named",
        "source_citation": "https://kalshi.com/",
        "sources": [
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            "name": "relevant county clerk or board of elections",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
          },
          {
            "name": "Attorney General of the United States",
            "url": "https://www.justice.gov/ag",
            "provenance": "platform_api"
          },
          {
            "name": "relevant city/municipal clerk",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
          },
          {
            "name": "in hierarchical order: the relevant state Secretary of State or chief election officer",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
          },
          {
            "name": "the Federal Election Commission",
            "url": "https://www.fec.gov",
            "provenance": "platform_api"
          },
          {
            "name": "state board of elections or canvassing board",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
          },
          {
            "name": "The Source Agencies are",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
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        ],
        "source_of_record": "relevant county clerk or board of elections",
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