A candidacy for nomination by a political party to a municipal office or a candidacy for election as a member of a town committee may be filed by or on behalf of any person whose name appears upon the last-completed enrollment list of such party within the senatorial district within which a person is to be nominated in the case of the municipal office of state senator, or the assembly district within which a person is to be nominated in the case of the municipal office of state representative, or the municipality or political subdivision within which a person is to be nominated in the case of a town committee member or for any other municipal office. Any such candidacy shall be filed by filing with the registrar within the applicable time specified in § 9-405 a petition signed by (1) at least five per cent of the electors whose names appear upon the last-completed enrollment list of such party in such municipality or in such political subdivision, senatorial district or assembly district, or (2) such lesser number of such electors as such party by its rules prescribes, as the case may be. For the purpose of computing five per cent of the last-completed enrollment list, the registrar shall use the last printed enrollment list and the printed updated list, if any, of a political party certified and last completed by the registrars of voters prior to the date the first primary petition was issued, excluding therefrom the names of individuals who have ceased to be electors.