78.720.  Other applicable procedures for optional plan — councilmen, nomination and election — eligible voters — statement of candidacy, contents — ballot form. — Except as otherwise provided in sections 78.700 to 78.720, the provisions of sections 78.430 to 78.640 shall apply to the adoption, implementation, or abandonment of the optional city manager form of government, provided that:

  (1)  Only the qualified voters of each ward shall be eligible to vote to nominate the candidates for councilmen of their respective wards, or to elect a ward councilman; and

  (2)  Statements of candidacy shall indicate whether the candidate is running at large or as a ward councilman.  Candidates seeking to become a ward councilman shall also specify the ward and state under oath that they are a qualified voter of such ward; and

  (3)  Separate ballots shall be provided in all elections held pursuant to the adoption of the optional city manager form of government for the offices of councilmen at large and ward councilman, designated as follows:

"FOR COUNCILMEN AT LARGE" or "FOR ______ WARD COUNCILMAN".