Arizona constitution
Article 6
Section 30

A. The supreme court, the court of appeals and the superior court shall be courts of record. Other courts of record may be established by law, but justice courts shall not be courts of record.
B. All justices and judges of courts of record, except for judges of the superior court and other courts of record inferior to the superior court in counties having a population of less than two hundred fifty thousand persons according to the most recent United States census, shall be appointed in the manner provided in section 37 of this article.