Mo. Rev. Stat. § 78.540: Conduct of election — council to establish voting precincts.

1. If a person elected fails to qualify within thirty days after his election, the office shall be filled as if there were a vacancy in such office, as herein provided.

2. No informalities in conducting municipal elections shall invalidate the same, if they have been conducted fairly and in substantial conformity to the requirements of these sections.

3. The council shall by ordinance, resolution or otherwise, divide the city into as many voting precincts as it may deem necessary to afford all the voters a convenient opportunity of exercising the right of franchise in all municipal elections to be held in the city, and each of said precincts shall be deemed a ward within the purview of the general and primary election laws of the state.