Rhode Island Attorney General Peter Neronha has sued Kalshi and Polymarket, escalating a legal dispute over whether the companies can offer contracts tied to sports outcomes in the state.
The legal action came hours after Kalshi filed its own lawsuit in federal court on 21 May seeking to block Rhode Island from restricting its operations.
Neronha argued that the event contracts offered by Kalshi and Polymarket function as sports betting and therefore violate state law, which permits sports wagering only through the state-authorized platform, Sportsbook RI.
“There is no substantive difference between sports betting and ‘events contracts’ in this context; Kalshi and Polymarket know that, and we know that,” Neronha said in a statement.
