Wis. Const. art. VII, § 8
[As amended April 1977]
[1975 J.R. 13, 1977 J.R. 7, vote April 1977]
Except as otherwise provided by law, the circuit court shall have original jurisdiction in all matters civil and criminal within this state and such appellate jurisdiction in the circuit as the legislature may prescribe by law. The circuit court may issue all writs necessary in aid of its jurisdiction.