Contested. Polymarket says it accepts Ohio. Ohio has acted against Polymarket: ohio Casino Control Commission sent PM US Tech (QC Tech LLC), Polymarket US, a cease and desist letter on sports event contracts, 14 days to confirm compliance.
Polymarket and the alternatives in Ohio
What the law says
2 OCT 2026Ohio Casino Control Commission sent PM US Tech (QC Tech LLC), Polymarket US, a cease and desist letter on sports event contracts, 14 days to confirm compliance. ingame.com ↗
2 OCT 2026Ohio Casino Control Commission sent Novig Betting and Ludlow Exchange a cease and desist letter on sports event contracts, 14 days to confirm compliance (hosted by InGame). ingame.com ↗
2 OCT 2026Ohio Casino Control Commission reasserted its 31 Mar 2025 notice to Robinhood Derivatives with a new cease and desist letter on sports event contracts, 14 days to comply. ingame.com ↗
25 SEP 2026Sixth Circuit held CEA does not preempt Ohio gambling law and affirmed the S.D. Ohio denial of Kalshi's preliminary injunction (KalshiEX v. Schuler, No. 26-3196). opn.ca6.uscourts.gov ↗
12 MAY 2026CFTC filed a Sixth Circuit amicus brief in KalshiEx LLC v. Schuler, No. 26-3196, from a federal district court ruling in Ohio (release 9230-26). cftc.gov ↗
31 MAR 2025Ohio Casino Control Commission issued its original cease and desist notice to Robinhood on 31 Mar 2025, as recounted in its 2 Oct 2026 letter. ingame.com ↗