Utah Const. art. VIII, § 6

[Number of judges of district court and other courts -- Divisions.] The number of judges of the district court and of other courts of record established by the Legislature shall be provided by statute. No change in the number of judges shall have the effect of removing a judge from office during a judge's term of office. Geographic divisions for all courts of record except the Supreme Court may be provided by statute. No change in divisions shall have the effect of removing a judge from office during a judge's term of office.