The terms of the initial appointed members shall commence on January 1, 2013, and shall end on June 30, 2014. The terms of subsequently appointed members shall commence on July 1 of each year following the election of the Governor thereafter and shall be for four (4) years. If a vacancy occurs, the vacancy shall be filled for the unexpired term in the same manner as the office was previously filled.
Okla. Stat. tit. 70, § 3-116.2