Okla. Admin. Code § 230:15-5-102.3
Information related to an individual's decision not to register to vote or to the identity of the agency at which any person applied to register to vote shall not be made public and shall not be used for any purpose other than voter registration. The identity and location of a motor license agency or Department of Public Safety facility at which a person registers or declines to register to vote shall not be disclosed to the public. Department of Public Safety and motor license agency personnel shall not write or stamp any information that could identify the agency outside the shaded box labeled for such purpose and located at the top of the voter registration application form. Completed and signed voter registration applications shall be maintained in a secure and confidential manner until they are mailed to the State Election Board as provided in 230:15-5-108.
Okla. Admin. Code § 230:15-5-102.3