{
  "_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-5VSXNFCXN5",
  "slug": "kxchicagomayor-27",
  "question": "Chicago Mayor winner?",
  "category": "politics",
  "event_type": "BINARY",
  "ladder_distribution": null,
  "tags": [
    "politics",
    "chicago-politics",
    "us-mayoral-election",
    "2028-election",
    "local-government",
    "electoral-outcome"
  ],
  "catalyst_types": [],
  "catalyst_dates": [],
  "editorial_notes": "These markets track the outcome of the 2027 Chicago mayoral election. Kalshi lists fifteen candidate-specific contracts, each pricing one named candidate's vote share relative to the full field. All contracts resolve via Kalshi staff determination against certified election results. Resolution is set for February 23, 2027, aligned with the election cycle.",
  "venues_covered": [
    "kalshi"
  ],
  "primary_market_id": "CM-MKT-54ZGHK7MW8",
  "current_primary_mark": {
    "last_price": 0.6,
    "implied_probability": 0.6,
    "as_of": "2026-09-05T05:00:33.736Z"
  },
  "created_at": "2026-08-04T20:03:51.865287+00:00",
  "updated_at": "2026-08-04T20:03:51.865287+00:00",
  "markets": [
    {
      "market_id": "CM-MKT-54ZGHK7MW8",
      "event_id": "CM-EVT-5VSXNFCXN5",
      "platform": "kalshi",
      "platform_market_id": "KXCHICAGOMAYOR-27-AGIA",
      "question": "Who will win 2027 Chicago mayoral election?",
      "description": "Alexi Giannoulias",
      "contract_type": "binary",
      "settlement_currency": "USD",
      "underlying_reference": "Alexi Giannoulias: The named candidate's vote share relative to all candidates in the 2027 Chicago mayoral election, as certified by the Cook County Clerk, resolves 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 the 2027 Chicago mayoral election, 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": [
          {
            "name": "relevant county clerk or board of elections",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
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          {
            "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"
          },
          {
            "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",
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      "rcg": {
        "grade": "A",
        "score": 91,
        "caps": [],
        "applied_factors": 7
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      "last_price": 0.6,
      "implied_probability": 0.6,
      "price_as_of": "2026-09-05T05:00:33.736Z",
      "volume_24h_usd": 0,
      "volume_total_usd": 13895.514,
      "settlement_style": "occurrence",
      "direction": "occurrence",
      "threshold": null,
      "question_id": null,
      "also_on": null,
      "tags": [
        "2027",
        "alexi giannoulias",
        "chicago",
        "mayor"
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      "eligibility_screens": [
        {
          "regime": "ciro-26-0076",
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          "status": "not_eligible",
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            "category_not_permitted"
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          "permitted_category": null,
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    {
      "market_id": "CM-MKT-FT715DMLS4",
      "event_id": "CM-EVT-5VSXNFCXN5",
      "platform": "kalshi",
      "platform_market_id": "KXCHICAGOMAYOR-27-MPAP",
      "question": "Who will win 2027 Chicago mayoral election?",
      "description": "Maria Pappas",
      "contract_type": "binary",
      "settlement_currency": "USD",
      "underlying_reference": "Maria Pappas: The named candidate's vote share relative to all candidates in the 2027 Chicago mayoral election, as certified by the Cook County Clerk, resolves 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 the 2027 Chicago mayoral election, then the market resolves to Yes.",
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        "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": "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/",
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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",
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          {
            "name": "state board of elections or canvassing board",
            "url": "https://kalshi.com/",
            "provenance": "platform_api"
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          {
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        "source_of_record": "relevant county clerk or board of elections",
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      "rcg": {
        "grade": "A",
        "score": 91,
        "caps": [],
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      "last_price": 0.036,
      "implied_probability": 0.036,
      "price_as_of": "2026-08-14T20:01:04.604Z",
      "volume_24h_usd": 0,
      "volume_total_usd": 165.97872,
      "settlement_style": "occurrence",
      "direction": "occurrence",
      "threshold": null,
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      "tags": [
        "2027",
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        "mayor"
      ],
      "eligibility_screens": [
        {
          "regime": "ciro-26-0076",
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          "status": "not_eligible",
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    },
    {
      "market_id": "CM-MKT-4JBK285J86",
      "event_id": "CM-EVT-5VSXNFCXN5",
      "platform": "kalshi",
      "platform_market_id": "KXCHICAGOMAYOR-27-REMA",
      "question": "Who will win 2027 Chicago mayoral election?",
      "description": "Rahm Emanuel",
      "contract_type": "binary",
      "settlement_currency": "USD",
      "underlying_reference": "Rahm Emanuel: The named candidate's vote share relative to all candidates in the 2027 Chicago mayoral election, as certified by the Cook County Clerk, resolves on February 23, 2027.",
      "close_at": "2028-02-23T15:00:00Z",
      "resolve_at": "2027-02-23T15:00:00Z",
      "status": "open",
      "resolution": {
        "rules_raw": "If Rahm Emanuel wins the 2027 Chicago mayoral election, 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/",
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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/",
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          {
            "name": "in hierarchical order: the relevant state Secretary of State or chief election officer",
            "url": "https://kalshi.com/",
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          {
            "name": "the Federal Election Commission",
            "url": "https://www.fec.gov",
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          {
            "name": "state board of elections or canvassing board",
            "url": "https://kalshi.com/",
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          {
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            "url": "https://kalshi.com/",
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        ],
        "source_of_record": "relevant county clerk or board of elections",
        "source_mechanism": "precedence",
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      "rcg": {
        "grade": "A",
        "score": 91,
        "caps": [],
        "applied_factors": 7
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      "last_price": 0.001,
      "implied_probability": 0.001,
      "price_as_of": "2026-08-25T11:01:09.506Z",
      "volume_24h_usd": 0,
      "volume_total_usd": 0.9169700000000001,
      "settlement_style": "occurrence",
      "direction": "occurrence",
      "threshold": null,
      "question_id": null,
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      "tags": [
        "2027",
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        "mayor",
        "rahm emanuel"
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      "eligibility_screens": [
        {
          "regime": "ciro-26-0076",
          "screen_version": "v1",
          "status": "not_eligible",
          "reasons": [
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          "permitted_category": null,
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      ]
    },
    {
      "market_id": "CM-MKT-5D2XBR4WW8",
      "event_id": "CM-EVT-5VSXNFCXN5",
      "platform": "kalshi",
      "platform_market_id": "KXCHICAGOMAYOR-27-PVAL",
      "question": "Who will win 2027 Chicago mayoral election?",
      "description": "Paul Vallas",
      "contract_type": "binary",
      "settlement_currency": "USD",
      "underlying_reference": "Paul Vallas: The named candidate's vote share relative to all candidates in the 2027 Chicago mayoral election, as certified by the Cook County Clerk, resolves 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 the 2027 Chicago mayoral election, 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": [
          {
            "name": "relevant county clerk or board of elections",
            "url": "https://kalshi.com/",
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          },
          {
            "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/",
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          {
            "name": "in hierarchical order: the relevant state Secretary of State or chief election officer",
            "url": "https://kalshi.com/",
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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/",
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          {
            "name": "The Source Agencies are",
            "url": "https://kalshi.com/",
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      "rcg": {
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        "score": 91,
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      "last_price": 0.001,
      "implied_probability": 0.001,
      "price_as_of": "2026-08-14T20:01:04.604Z",
      "volume_24h_usd": 0,
      "volume_total_usd": 0.6744500000000001,
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      "tags": [
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    {
      "market_id": "CM-MKT-MKD8N6VNZ8",
      "event_id": "CM-EVT-5VSXNFCXN5",
      "platform": "kalshi",
      "platform_market_id": "KXCHICAGOMAYOR-27-BJOH",
      "question": "Who will win 2027 Chicago mayoral election?",
      "description": "Brandon Johnson",
      "contract_type": "binary",
      "settlement_currency": "USD",
      "underlying_reference": "Brandon Johnson: The named candidate's vote share relative to all candidates in the 2027 Chicago mayoral election, as certified by the Cook County Clerk, resolves 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 the 2027 Chicago mayoral election, 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/",
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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/",
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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/",
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          {
            "name": "The Source Agencies are",
            "url": "https://kalshi.com/",
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        "source_of_record": "relevant county clerk or board of elections",
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      "rcg": {
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        "score": 91,
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        "applied_factors": 7
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      "last_price": 0.085,
      "implied_probability": 0.085,
      "price_as_of": "2026-09-05T05:00:33.736Z",
      "volume_24h_usd": 0,
      "volume_total_usd": 1152.243,
      "settlement_style": "occurrence",
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      "threshold": null,
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      "tags": [
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      "eligibility_screens": [
        {
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    {
      "market_id": "CM-MKT-1FJXJBSSL0",
      "event_id": "CM-EVT-5VSXNFCXN5",
      "platform": "kalshi",
      "platform_market_id": "KXCHICAGOMAYOR-27-KBUC",
      "question": "Who will win 2027 Chicago mayoral election?",
      "description": "Kam Buckner",
      "contract_type": "binary",
      "settlement_currency": "USD",
      "underlying_reference": "Kam Buckner: The named candidate's vote share relative to all candidates in the 2027 Chicago mayoral election, as certified by the Cook County Clerk, resolves 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 the 2027 Chicago mayoral election, 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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            "name": "relevant city/municipal clerk",
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            "url": "https://kalshi.com/",
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            "url": "https://kalshi.com/",
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          {
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    {
      "market_id": "CM-MKT-4B52KPN9V4",
      "event_id": "CM-EVT-5VSXNFCXN5",
      "platform": "kalshi",
      "platform_market_id": "KXCHICAGOMAYOR-27-JHOL",
      "question": "Who will win 2027 Chicago mayoral election?",
      "description": "Joe Holberg",
      "contract_type": "binary",
      "settlement_currency": "USD",
      "underlying_reference": "Joe Holberg: The named candidate's vote share relative to all candidates in the 2027 Chicago mayoral election, as certified by the Cook County Clerk, resolves 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 the 2027 Chicago mayoral election, 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/",
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          },
          {
            "name": "Attorney General of the United States",
            "url": "https://www.justice.gov/ag",
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          {
            "name": "relevant city/municipal clerk",
            "url": "https://kalshi.com/",
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          },
          {
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