Tennessee Code Title 2. Elections § 2-3-206

(a) Notwithstanding any provision of this title to the contrary, in any municipality in which the charter of such municipality provides for a runoff election following a primary election for municipal office, such runoff election may be held not less than thirty (30) days following the primary election.

(b) Notwithstanding any provision of this title to the contrary, the county election commission holding such runoff election shall provide a procedure for absentee voting in such election.

(c) Notwithstanding any private act or charter provision to the contrary, when a run-off election is scheduled to be held after a general election in any county having a metropolitan form of government, the run-off election shall be set by the election commission, not less than thirty (30) nor more than forty-five (45) days after the regular election.