(1) The supreme court, the court of appeals, the circuit court, the probate court and other courts designated as such by the legislature shall be courts of record and each shall have a common seal. Justices and judges of courts of record must be persons who are licensed to practice law in this state.

    (2) To be qualified to serve as a judge of a trial court, a judge of the court of appeals, or a justice of the supreme court, a person shall have been admitted to the practice of law for at least 5 years. This subsection shall not apply to any judge or justice appointed or elected to judicial office prior to the date on which this subsection becomes part of the constitution.

    (3) No person shall be elected or appointed to a judicial office after reaching the age of 70 years.