Wisconsin constitution
Article VII: judiciary
As created april 1955 and amended april 1968 and april 1977.

(1) To be eligible for the office of supreme court justice or judge of any court of record, a person must be an attorney licensed to practice law in this state and have been so licensed for 5 years immediately prior to election or appointment.
(2) Unless assigned temporary service under subsection (3), no person may serve as a supreme court justice or judge of a court of record beyond the July 31 following the date on which such person attains that age, of not less than 70 years, which the legislature shall prescribe by law.
(3) A person who has served as a supreme court justice or judge of a court of record may, as provided by law, serve as a judge of any court of record except the supreme court on a temporary basis if assigned by the chief justice of the supreme court.

Structure Wisconsin constitution