Polymarket joins Kalshi in suing Minnesota over prediction market ban
Polymarket sued Minnesota in federal court on Wednesday, joining Kalshi in challenging the state's ban on prediction markets. The complaint for injunctive relief was filed in the U.S. District Court for the District of Minnesota and names Gov. Tim Walz and Attorney General Keith Ellison among the defendants. The suit from Polymarket's domestic division targets what the suit describes as an increasingly polarizing prohibition on prediction market operations. The filing follows earlier legal actions by Kalshi and a Trump-related party against the same Minnesota law. The cases are being brought in Minneapolis.
Creates a unified federal court docket in Minnesota that pools Kalshi's, Polymarket's, and the Trump entity's challenges against the same state prohibition, raising the stakes for Walz and Ellison to defend a law now under multifront constitutional attack.