(a) A person who seeks to vote by absentee ballot may file either in person or by mailing his written application to the City Clerk.
(b) An application made by mail must be received by the City Clerk not more than 20 days, nor less than three days before a city election. An application made in person must be filed with the City Clerk not more than 15 days before the city election, and no later than noon on the day before a city election.
(c) The application must be signed by the applicant and show his place of residence.
(d) Nothing in this section is intended to limit the City Clerk in personally delivering a ballot to a person who, because of physical incapacity, is unable to make application in person at the City Clerk's office for an absent voter's ballot.