Tenn. Code Ann. § 2-6-106: Voter unable to write signature or make mark - Assistance by person convicted of voter fraud prohibited

(a) If an applicant or voter is so disabled that the applicant or voter cannot write a signature or make a mark where required, the action of the person who offers assistance shall be witnessed by one (1) additional person. Both the person giving assistance and the witness shall sign their names and provide their addresses.

(b) Notwithstanding subsection (a), a person convicted of voter fraud in any state shall not assist a person in voting under this section.