Tenn. Code Ann. § 2-7-117: Write-in procedure where voting machines are used

(a) Where voting machines are used, any voter desiring to cast a ballot for a candidate whose name is not on the voting machine ballot may request a paper ballot to be furnished by the ballot judge. This request must be made before operating a voting machine, and a voter after receiving a paper ballot may not enter a voting machine.

(b) The procedure for casting a write-in ballot in counties which use or have a C.E.S., Inc., Votomatic or other comparable punch card voting system shall be governed by rules and regulations promulgated by the coordinator of elections and the state election commission relative to the use of punch card voting systems.