Every registered elector who is 21 years of age or older on the date of the next election, who has resided within the city for at least one year prior to the date of the election, and who is a citizen of the United States is qualified to hold elective office within the city subject to the remaining conditions of this section. Candidates for ward seats are also required to be one-year residents of the respective wards from which they are elected. Persons convicted of embezzlement of public money, bribery, perjury, solicitation of bribery, or subordination of perjury shall not become a candidate and are not qualified to hold elective office. Candidates, if elected, shall not hold any other elective public office or be a salaried employee of the city.