Iowa constitution
Article V
Section 16

Due consideration shall be given to area representation in the appointment and election of judicial nominating commission members. Appointive and elective members of judicial nominating commissions shall serve for six-year terms, shall be ineligible for a second six-year term on the same commission, shall hold no office of profit of the United States or of the state during their terms, shall be chosen without reference to political affiliation, and shall have such other qualifications as may be prescribed by law. As near as may be, the terms of one-third of such members shall expire every two years.