Okla. Stat. tit. 20 § 30.11
Judges of the Court of Civil Appeals shall be elected or appointed from the Congressional Districts with the boundaries as they exist at the time the Judge is elected or appointed to office; however, should the boundaries of the six Congressional Districts be revised and elections for the office of United States Representative be conducted using the revised boundaries, then the revised boundaries shall also be used in the conduct of any elections required for the office of Judge of the Court of Civil Appeals; except that Judges of the Court of Civil Appeals seeking retention shall be retained in the original Congressional District from which they were elected or appointed; provided, however, nothing in this section shall be construed to require a change of residence of a Judge of the Court of Civil Appeals seeking retention. Should the number of Congressional Districts be increased or decreased the sections which define the area of each of the six Congressional Districts shall remain in effect for the purpose of this act, and at that time the sections shall be renumbered and codified in this title of the Oklahoma Statutes following this act.
Okla. Stat. tit. 20, § 30.11