What changed in prediction-market availability?
The dated record of venue-availability changes we have verified, newest first.
- — Promo exclusion list now 13 states (AR, AZ, CT, IL, LA, MA, MD, MI, MT, NV, NJ, OH, WA)
The union of venue promo-exclusion states grew from 9 to 13 during 2026. Current list tracked on this site — AR, AZ, CT, IL, LA, MA, MD, MI, MT, NV, NJ, OH, WA.
- — SCOTUS petition filed in Flaherty v. KalshiEX
Petition (No. 26-299) asked the Supreme Court to resolve the circuit split on whether the CEA preempts state gambling law for sports event contracts.
- — Ninth Circuit ruled against Kalshi in Nevada (NV)
In KalshiEX v. Assad, the Ninth Circuit held Nevada could enforce its gambling law against Kalshi's sports event contracts — the opposite of the Third Circuit's preemption holding.
- — Third Circuit held CEA preempts New Jersey gambling law (NJ)
The Third Circuit upheld the injunction protecting Kalshi's sports event contracts from New Jersey enforcement, finding federal preemption under the CEA.
- — Polymarket US (QCX) launched
Polymarket's US-regulated exchange began onboarding with a sports-led market roster; availability remained limited and phased into 2026.