Federal appeals courts that have ruled for the states: 2 of 3

Every US state and DC, with the court rulings, lawsuits and regulator letters aimed at Kalshi and at Polymarket US, kept apart. A blank record is not permission, and polymarket.com stays closed to new US trades. Kalshi and Polymarket US are CFTC-registered exchanges, and both take customers across the country on the argument that federal law, not state gambling law, governs what they list.

- Supreme Court petitions pending: 3
- CFTC interim rule in force: 19 Oct 2026
- polymarket.com for US users: Close-only

Sources checked 30 October 2026.

Study: https://vultax.com/research/prediction-market-legality/united-states
Markdown: https://vultax.com/research/prediction-market-legality/united-states.md
Data: https://vultax.com/research/prediction-market-legality/united-states/data.json
Share card: https://vultax.com/og/article/research/prediction-market-legality-united-states
Live screen: https://app.vultax.com/predictions

Vultax Research Team, Is Kalshi Legal in My State? Kalshi and Polymarket US, State by State, 2026-10-30, https://vultax.com/research/prediction-market-legality/united-states