All persons appointed as members of the State Election Board or a county election board shall, before entering upon the duties of their offices, take and subscribe to the oath of office prescribed by the Constitution for state and county officers. Said oaths shall be retained in the office of the Clerk of the Supreme Court, with regard to members of the State Election Board, and in the office of the county clerk, with regard to members of a county election board.
Okla. Stat. tit. 26, § 3-125