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Quick Glance at the Facts
- On August 5, 2026, the Wisconsin Institute for Law & Liberty (WILL) filed a lawsuit to strike down 2025 Wisconsin Act 247, the state’s new statewide mobile sports betting law.
- WILL argues the law breaks a 1993 amendment to the Wisconsin Constitution that bars the Legislature from authorizing gambling in any form beyond a short list of exceptions.
- Statewide mobile betting is not live yet, and Gov. Tony Evers says he will fight the challenge.
A conservative law firm is suing to strike down Wisconsin’s new mobile sports betting law before a single statewide bet is placed. The case could stall or kill online sports betting in a state where the regulated market has not launched yet.
What the Lawsuit Claims
On August 5, 2026, the Wisconsin Institute for Law & Liberty (WILL), a Milwaukee-based conservative nonprofit, filed suit in Waukesha County Circuit Court on behalf of two taxpayer groups, the Brown County Taxpayers Association and Citizens Defending Liberty. The target is 2025 Wisconsin Act 247, first introduced as Assembly Bill 601, which Gov. Tony Evers signed in April 2026. The law legalizes statewide mobile sports betting by excluding certain sports wagers from the legal definition of a “bet,” so a wager placed on a phone anywhere in the state counts as happening on a server sitting on tribal land.
WILL argues that setup breaks a 1993 amendment to the Wisconsin Constitution, which stops the Legislature from authorizing gambling in any form outside the state lottery, bingo, raffles, and pari-mutuel on-track betting. “Thirty-three years ago, Wisconsinites expressed through a constitutional amendment that the Legislature may not expand gambling in any form,” WILL Associate Counsel Kirsten Atanasoff said in the firm’s statement. The suit also raises a federal Equal Protection claim, arguing the law benefits people based on race because only Wisconsin’s 11 federally recognized tribal nations could run the mobile sportsbooks.
The complaint names Gov. Evers along with Department of Administration Secretary Kathy Blumenfeld, Division of Gaming Administrator John Dillett, and Indian Gaming Audit Director Jessie Dushek, per Courthouse News. It asks the court to declare Act 247 unconstitutional, block Evers from negotiating new tribal gaming compacts, and stop state officials from authorizing statewide mobile betting.
What Happens Next
The parties named in the suit have 45 days to respond. Statewide mobile sports betting cannot start until Evers negotiates amended tribal gaming compacts that then win federal approval, and this lawsuit tries to freeze that process before it finishes. As of August 2026, no statewide sportsbook app has gone live in the state.
Evers plans to fight. His spokesperson, Britt Cudaback, said the governor will defend the law, reported FOX6 Milwaukee. WILL has hinted the case could reach further than sports betting.
Attorney Dan Lennington said in a social media post that the case “will likely call into question all gaming in Wisconsin, not just online sports betting,” as reported by Wisconsin Public Radio. WILL also points to a Marquette University Law School Poll, cited in its statement, finding that 64% of Wisconsinites oppose legalizing online sports betting.
How This Impacts Wisconsin Players
Right now, nothing changes for Wisconsin bettors. Legal sports betting in the state still means in-person wagering at select tribal casinos under earlier compacts, and full mobile access from anywhere in Wisconsin stays on hold while the case moves through court.
Our Wisconsin guide tracks what is and is not available in the state, and players who want to bet online today still turn to offshore sportsbooks that accept Wisconsin residents and operate outside the state system.
GamblingNerd Take
Wisconsin built its mobile betting law on a legal shortcut, and that shortcut is now the whole fight. For players, this means the wait for regulated statewide apps just got longer and far less certain. If you plan to bet this football season, check which offshore sportsbooks currently accept Wisconsin players instead of counting on Act 247.
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