25 CFR 82.7 - Notarization of petition signatures.
(a) Signatures to a petition must be authenticated in one of the following ways:
(1) Through having each signer subscribe or acknowledge his/her signature before a notary public;
(2) Through having the collector of signatures appeal before a notary and sign, in his/her presence, on each sheet of the petition, a statement attesting that the signatures were affixed on the dates shown and by the individuals whose names appear thereon, and that to the best of his/her knowledge the signatories are eligible, entitled, or qualified voters.
(b) Only an eligible, entitled, or qualified tribal voter shall be recognized as a valid collector of petition signatures.