Reduction in number of nominees through death, withdrawal or disqualification--Availability of nominating petition

If after nominations have been made under the provisions of this chapter and the number of nominees for a director office shall be reduced through death, withdrawal or disqualification of a nominee, the registered voters of the district may, if there is sufficient time for filing a nominating petition pursuant to § 12-8-6 , nominate one or more candidates for such director office by a petition otherwise complying with §