The Clerk shall accept for filing only nominating petitions on official blanks containing the required number of signatures for qualified candidates. When petitions are filed by persons other than the person whose name appears thereon as a candidate, they may be accepted for filing only when accompanied by the written consent of the person in whose behalf the petition or petitions were circulated. The Clerk shall forthwith determine the sufficiency of the signatures on each petition filed, and if he/she finds that any petition does not contain the required number of legal signatures of registered electors, he/she shall immediately notify the candidate, who may file an amended petition not later than five (5) days after the date and hour for filing the original petition. Petitions which are found by the Clerk to contain the required number of signatures of registered electors for candidates shall be marked "Qualified", with the date thereof.