All candidates for elective municipal offices shall be nominated under the provisions of Chapter 45 of the Code of Iowa.
(Code of Iowa, Sec. 376.3)
6.02 NOMINATIONS BY PETITION.
Nominations for elective municipal offices of the City may be made by nomination paper or papers signed by not less than 25 eligible electors, residents of the City.
(Code of Iowa, Sec. 45.1)
6.03 ADDING NAME BY PETITION.
The name of a candidate placed upon the ballot by any other method than by petition shall not be added by petition for the same office.