Okla. Stat. tit. 34, § 6

Any person who circulates a sheet of the petition shall be a registered voter of this state and shall verify the signatures included on any signature sheets he or she circulates by executing his or her affidavit thereon and as a part thereof. The Secretary of State shall cause to be affixed onto the back of the signature form an affidavit, subject to change, for the circulator to verify the signatures. State of Oklahoma,)) ss. County of ________) I, ______, being first duly sworn, say: That I am at least eighteen (18) years old, a registered voter of this state, and that all signatures on the signature sheet were signed in my presence; I believe that each has stated his or her name, mailing address, county of residence, and date of birth associated with his or her Oklahoma voter registration record, and that each signer is a legal voter of the State of Oklahoma and county of ______ or of the city of ______ (as the case may be). (Signature and complete address of affiant.) Subscribed and sworn to before me this ________ day of ________ A.D. 20__. (Signature and title of the Oklahoma notarial officer before whom oath is made, and his or her complete address, commission number and expiration date, and official Oklahoma notary public seal.)