Okla. Stat. tit. 19 § 19
Every person desiring to vote at such special election, after having passed the challengers whose duty shall be the same as prescribed by law governing any general election, and being admitted to the room, shall, before being given a ballot, permit the clerks to fill out an affidavit and the intended voter shall subscribe and swear to the affidavit before the special election commissioner, after which such person shall be given tickets and permitted to prepare the same and deliver the ballots to the special election commissioner who shall, in the presence of the voter, deposit the ballot in the proper ballot box, and shall deposit the affidavit in the box provided for that purpose. The form of affidavit required of all persons presenting themselves to vote at such special election shall be substantially as follows:
Affidavit.
State of Oklahoma, County of ______ss.
______of lawful age, first being duly sworn, upon oath deposes and says: That he or she is a citizen of the United States, is over the age of eighteen years, that he or she has been for one year last past a bona fide resident of this state, of the county six months, and in ________precinct thirty (30) days next preceding this date;
that he or she came to his or her present residence from _______and is a legally qualified elector in the precinct on this day and has not voted in the election.
___________________
Subscribed and sworn to before me this _____day of ______A.D. (year).
Special Election Commissioner.
Okla. Stat. tit. 19, § 19