Wis. Stat. § 565.015: Advisory referendum on additional forms of gambling.

After January 1, 1993, neither house of the legislature may pass any bill that authorizes the conduct of any game specified in s. 565.01 (6m) (b), 1991 stats., unless, prior to the passage of that bill and during the same legislative session, all of the following occur:

(1) A bill requiring a statewide advisory referendum on the question of whether the legislature should authorize the conduct of such a game has been enacted.

(2) The advisory referendum required under sub. (1) has been held.