Tennessee Code Title 6. Cities and Towns § 6-53-110

(a)(1) Notwithstanding any other law or charter to the contrary, no member of the legislative body of a municipality, a popularly elected school board, or any other similarly constituted and elected board or commission of a county or municipality shall be elected to such office through an election procedure requiring candidates to be nominated from a district and elected at-large, but such members shall be elected from districts as established by the appropriate county or municipality, which districts shall:

(2) Following the establishment of the districts, such districts shall be reapportioned at least as often as districts for the county legislative body of such county are reapportioned to ensure compliance with the limitations prescribed in this section.