A signer of an initiative and referendum petition shall be a registered voter of the State of Nebraska on or before the date on which the petition is required to be filed with the Secretary of State and shall meet the requirements of section 32-630. A person who circulates initiative and referendum petitions shall comply with the requirements of section 32-629 and subsection (2) of section 32-630 and with the prohibitions contained in subdivisions (3)(a), (d), and (f) of section 32-630.