Wis. Stat. § 939.619: Mandatory minimum sentence for repeat serious violent crimes.

(1) In this section, “serious violent crime” means a violation of s. 940.02, 940.03, 940.05, 940.06, 940.09, 940.21, 940.305, 940.31, 940.60 (3) (b), 941.327 (2) (b) 2., 3., or 4., 943.02, 943.231 (1), 943.32 (2), 943.87, 948.03 (2) (a) or (5), 948.051, or 948.30 (2) or s. 940.19 (5), 2023 stats.

(2) If a person has one or more prior convictions for a serious violent crime or a crime punishable by life imprisonment and subsequently commits a serious violent crime, the court shall impose a bifurcated sentence under s. 973.01. The term of confinement in prison portion of a bifurcated sentence imposed under this subsection may not be less than 5 years, but otherwise the penalties for the crime apply, subject to any applicable penalty enhancement. The court may not place the defendant on probation.