The Secretary of the County Election Board shall cause at least two voting booths to be provided for each precinct. A voting booth must contain a counter or shelf and must be constructed in such a manner that a member of the Precinct Election Board can determine whether more than one person is in the booth, but in such a manner as to insure secrecy for the voter in marking his ballots.
Okla. Admin. Code § 230:10-7-29