Section 5.1  Eligibility For Office.
   (a)   No person shall hold any elective office or fill the vacancy in any elective office of the city unless he or she has been a resident of the city for at least one (1) year immediately prior to the date of the election at which he or she is a candidate.  He or she must also have been a registered elector on the last day for filing nominating petitions for such office or prior to his or her appointment to fill a vacancy.
   (b)   No person shall be eligible for any elective or appointive city office who is in default to the city.  The holding of office by any person who is in default shall create a vacancy unless such default shall be eliminated within thirty (30) days after written notice thereof has been served at his or her last known place of residence by the city clerk upon the direction of the council, or, unless the officer contests his or her liability for the default in a court of competent jurisdiction.
   (c)   No person who holds or has held the office of councilperson shall be eligible to hold any appointive office for which there is compensation paid by the city until one year has elapsed following retirement or resignation.
   (d)   No appointive city officer or employee shall seek an elective office of the city unless he or she resigns his or her position with the city upon election to office.
   (e)   All administrative officers (See Section 7.1 of this charter) shall be United States citizens.