Wisconsin Senate passes tribal sports betting bill
Table of contents
- Wisconsin’s Senate approved AB601 on a 21-12 vote on March 17, sending the bill to Governor Tony Evers‘ desk.
- The legislation adopts a hub-and-spoke model requiring all bets to be processed through servers on tribal land, granting tribes exclusive market control.
- Major operators including DraftKings and FanDuel oppose the bill, citing the revenue structure unfeasible.
Wisconsin is on the verge of legalising statewide mobile sports betting after the state Senate passed Assembly Bill 601 on March 17 by a 21-12 vote.
The bill now awaits the signature of Democratic Governor Tony Evers, whose decision will determine whether the state joins around 40 others with legal online sports wagering.
Wisconsin already permits retail sports betting on tribal lands. AB601 would expand that to statewide mobile, with all bets required to be processed through servers located on tribal sovereign territory.
Hub-and-spoke model
The bill mirrors the structure used by the Seminole Tribe in Florida, which began offering online sports betting in 2021 by arguing that since its servers were located on tribal land, any bet placed in the state and processed through the device was technically made on tribal land.
Supporters argue the measure provides new revenue streams for tribes and brings a market that already exists informally into a regulated framework.
Sen. Kristin Dassler-Alfheim (D-Appleton), a bill supporter, said:
“I would rather put as many parameters around it as we can to take care of our consumers… It is going to happen in Wisconsin. I think taking control of it at this point is a smarter play for all of us.”
The bill drew backing from several local businesses and organisations, including the Milwaukee Brewers, the Forest County Potawatomi Community, the Ho-Chunk Nation, the Stockbridge-Munsee Community, and the Metropolitan Milwaukee Association of Commerce.
The rise of sports prediction markets has given residents more opportunities to wager online. The state’s tribes have spoken out against prediction markets — the Ho-Chunk Nation filed a lawsuit against Kalshi last year.
Operators push back
The legislation’s revenue structure is the primary obstacle for national sportsbook brands. Under federal IGRA rules, tribes must receive at least 60% of net gaming revenues, a threshold that operators say makes participation commercially unviable.
Alliance representative Damon Stewart testified that the revenue split makes partnerships unviable, a position shared by the Sports Betting Alliance’s members, which include FanDuel, DraftKings, BetMGM, and Fanatics.
Some senators pushed back against that framing. Sen. Dassler-Alfheim said companies such as FanDuel and DraftKings do not want the tribes involved in sports betting:
“They want to mainline this themselves.”
A Marquette University poll conducted February 11–19, 2026, of 818 registered voters found limited public enthusiasm for legalisation, with 64% of respondents opposed and just 34% in favour.
Governor’s decision looms
Evers has said he supports bills developed in consultation with tribes, a position his office has maintained throughout the session. A spokesperson for Evers previously said he is likely to sign such a bill into law as long as it is passed in consultation with Wisconsin’s tribes.
Should Evers sign, the state will still need to renegotiate tribal gaming compacts, which must then receive federal approval before the market goes live.
If he signs the bill, some conservatives have already signalled plans to challenge it in court, arguing that online wagering cannot be allowed without amending the state constitution.
For operators and investors, the Wisconsin outcome carries major implications. The market will likely operate without the major commercial brands that have defined mobile betting in states such as New Jersey and Pennsylvania, limiting competitive pressure but also constraining the volume of taxable handle.
If Evers signs, the state will test if a tribal-exclusive online model can generate meaningful revenue, and whether it can hold up against the legal and constitutional challenges already being prepared by opponents.
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