2021 Tennessee Code
Part 1 - Registration by Election Commissions
§ 2-2-123. Cancellation of Previous Registration

If a registrant was previously registered in any other place, the registrant's application to register shall serve as a cancellation of registration for the last place of registration. Upon registration of the voter, the administrator of elections shall mail a copy of the new registration to the county election commission where the voter was last registered or otherwise notify such county election commission of the new registration.