Mass. Gen. Laws ch. 53, § 20

The provisions of law relative to the signing of nomination papers of candidates for state office, and to the identification and certification of names thereon and submission to the registrars therefor, shall apply, so far as apt, to applications submitted under section nineteen. Petition forms for such applications submitted under section nineteen shall be made available for use on or before the fifteenth Tuesday preceding the final date for filing as provided in section twenty-one.