Regular municipal elections shall be held in each odd-numbered year in accordance with the uniform municipal election laws of North Carolina. For purpose of the election of Town Council members, the Town is divided into three geographical subdivisions, known as districts, and all qualified voters of the Town may cast a vote for each seat. A written description or map showing the current boundaries of the three election districts shall be maintained in the office of the Town Clerk and shall be available for public inspection. The district boundaries may be amended periodically pursuant to the provisions of general law. Whenever areas are hereafter annexed and made part of the Town, the Town Council shall, by ordinance, redefine and rearrange the three election districts so as to include the annexed areas. The ordinance shall be adopted at least seven days prior to the opening of candidate filing for the municipal election next succeeding the date of any annexation and shall provide for three election districts of approximately equal population. In redefining and rearranging the election district lines, the Town Council shall follow as nearly as practical existing district lines.