Every citizen of this State and of the United States:

1. (1) Of the age of eighteen years and upwards;
2. (2) Having all the qualifications mentioned in Section 7-5-120;
3. (3) Who has resided within the corporate limits of any incorporated municipality in this State for thirty days previous to any municipal election;

4. (4) Who has been registered for county, state, and national elections as herein required;

   is entitled to vote at all municipal elections of his municipality.