{ "schemaVersion": "vultax-public-research-data-v1", "articleUrl": "https://vultax.com/research/prediction-market-legality/united-states/washington", "datasets": [ { "title": "Kalshi, Polymarket US and polymarket.com in Washington", "columns": [ { "name": "Product", "unit": null }, { "name": "What applies in Washington", "unit": null }, { "name": "Source and date", "unit": null } ], "rows": [ [ "Kalshi: sports, elections, politics, entertainment, culture, tech and science, mentions", "Barred by a preliminary injunction; Kalshi must block new purchases from anyone located in Washington and stop Washington-targeted advertising", "King County Superior Court order signed 12 August 2026" ], [ "Kalshi: commodities, climate, economics, finance", "Not covered by the order", "Same order, paragraph (3)" ], [ "Polymarket US (QCX exchange)", "Not named in any Washington action Vultax found; its app terms require users to meet local age and eligibility rules and name no state", "Polymarket US app terms effective 23 October 2026; Vultax case record checked 30 October 2026" ], [ "polymarket.com (international)", "Close-only for the whole United States in the developer documentation; the help page lists the US as completely restricted", "Polymarket documentation and help page, read 30 October 2026" ] ], "measurementContext": "Read 30 October 2026. A row says what a court or a venue's own document states; it is not a finding that any trade is lawful.", "sources": [ { "label": "King County Superior Court: amended order granting the State's preliminary injunction, State of Washington v. KalshiEX LLC, No. 26-2-10264-3 SEA (signed 12 Aug 2026)", "url": "https://agportal-s3bucket.s3.us-west-2.amazonaws.com/Consumer%20Protection/64_OrdGrantAmendMtnPI.pdf?VersionId=a9FvcaBwWpQETWxbKUdHL1jqjTOD6XAi", "note": "16 pages, Judge John McHale; section III sets the covered categories, the geofencing deadlines and the right to exit positions" }, { "label": "Washington Attorney General: Judge orders Kalshi to cease numerous Washington operations (13 Aug 2026)", "url": "https://www.atg.wa.gov/news/news-releases/judge-orders-kalshi-cease-numerous-washington-operations", "note": "Says the Court of Appeals denied Kalshi a stay and that the order does not cover every Kalshi contract" }, { "label": "KOMO News: Kalshi asks King County judge to reconsider Washington injunction (21 Aug 2026)", "url": "https://komonews.com/news/local/kalshi-bet-on-anything-asks-king-county-judge-to-reconsider-washington-injunction-washington-attorney-general-prediction-market-gambling-commission", "note": "Press report; the motion and any ruling on it were not seen" }, { "label": "Washington State Legislature: RCW 9.46.0237, definition of gambling", "url": "https://app.leg.wa.gov/RCW/default.aspx?cite=9.46.0237", "note": null }, { "label": "Washington State Legislature: RCW 9.46.240, gambling information transmitted by internet", "url": "https://app.leg.wa.gov/RCW/default.aspx?cite=9.46.240", "note": "The 2006 online-gambling offence" }, { "label": "Polymarket US: app terms of service, effective 23 Oct 2026", "url": "https://polymarket.us/tos", "note": "QC Tech's app, separate from the QCX exchange and QC Clearing; section 3 sets age, eligibility and identity checks" }, { "label": "Apple App Store: Polymarket US app listing (read 30 Oct 2026)", "url": "https://apps.apple.com/us/app/polymarket-trade-live-sports/id6648798962", "note": "Says \"in all 50 states*\" with the footnote \"Trading currently unavailable in NV\"; the Google Play listing has no Nevada note" }, { "label": "Polymarket documentation: geographic restrictions (read 30 Oct 2026)", "url": "https://docs.polymarket.com/api-reference/geoblock", "note": "Blocked, close-only and website-only close-only lists for polymarket.com; does not cover Polymarket US" }, { "label": "Polymarket Help Center: geographic restrictions (read 30 Oct 2026)", "url": "https://help.polymarket.com/en/articles/13364163-geographic-restrictions", "note": "Updated 29 Oct 2026; headed 40 countries completely restricted but listing 41 codes, and differs from the developer documentation" }, { "label": "CFTC: interim final rule excluding casino-style gambling, 91 FR 65969 (19 Oct 2026)", "url": "https://www.govinfo.gov/content/pkg/FR-2026-10-19/html/2026-21376.htm", "note": "RIN 3038-AF81; in effect from 19 October 2026 (release 9309-26); comments close 18 November" }, { "label": "CFTC: proposed rule on event contracts, 91 FR 66022 (Federal Register, 19 Oct 2026)", "url": "https://www.govinfo.gov/content/pkg/FR-2026-10-19/pdf/2026-21377.pdf", "note": "RIN 3038-AF82; announced 9 October (release 9310-26); a proposal, comments close 18 November 2026" }, { "label": "Supreme Court docket 26-299, Flaherty v. KalshiEX (read 30 Oct 2026)", "url": "https://www.supremecourt.gov/docket/docketfiles/html/public/26-299.html", "note": "Response due 9 November 2026; on 29 October Kalshi asked, unopposed, to move it to 7 December" }, { "label": "Supreme Court docket 26-338, Robinhood Derivatives v. Dreitzer (read 30 Oct 2026)", "url": "https://www.supremecourt.gov/docket/docketfiles/html/public/26-338.html", "note": "Response due 13 November 2026" }, { "label": "Supreme Court docket 26-344, North American Derivatives Exchange (Crypto.com) v. Nevada (read 30 Oct 2026)", "url": "https://www.supremecourt.gov/docket/docketfiles/html/public/26-344.html", "note": "Response due 16 November 2026" }, { "label": "Kalshi's request to extend the time to respond in No. 26-299 (letter of 29 Oct 2026)", "url": "https://www.supremecourt.gov/DocketPDF/26/26-299/431233/20261029183513514_2026-10-29%20Flaherty%20v%20KalshiEX%20LLC%20Extension%20Request.pdf", "note": "Asks to move the brief in opposition from 9 November to 7 December 2026; not yet granted when read on 30 October" }, { "label": "Vultax: Prediction market lawsuit tracker", "url": "https://vultax.com/research/prediction-market-lawsuit-tracker", "note": "Every case Vultax follows, each checked against the court record" } ], "measurement": { "kind": null, "temporalCoverage": null, "population": null, "methodology": null }, "id": "venues-table", "kind": "published-table", "description": "A King County judge ordered Kalshi on 12 August 2026 to stop offering sports, election, politics, culture, tech and mentions contracts in Washington. What the order covers, what it leaves out, and where Polymarket US and polymarket.com stand.", "articleUrl": "https://vultax.com/research/prediction-market-legality/united-states/washington", "sectionUrl": "https://vultax.com/research/prediction-market-legality/united-states/washington#venues", "publishedAt": "2026-10-30", "modifiedAt": "2026-10-30", "version": "514071687c7dfe956a085e7b2902e13695a414f211a8d022cc2aac3b246bce3a", "isLive": false, "limitations": "Published research snapshots and calculations; these exports do not contain current quotes or live account data. Observation windows and populations are stated in the source captions and methodology. Missing metadata is unknown, not zero. Describes court orders, regulatory measures and venue documents as read on 30 October 2026, with federal docket entries as checked on 23 September 2026. The Washington order is a preliminary injunction, not a final judgment. Nothing here is legal or financial advice.", "downloads": { "json": "https://vultax.com/research/prediction-market-legality/united-states/washington/data.json?dataset=venues-table", "csv": "https://vultax.com/research/prediction-market-legality/united-states/washington/data.csv?dataset=venues-table" } } ] }