Tennessee Code Title 2. Elections § 2-2-118

(a) If a person registers to vote in the election commission office, the commission employee who assists the person in registering shall fill out the permanent registration record except for the person's signature or mark.

(b) When any person changes one's registration from postcard to in-person, the record from the old form may be transferred onto the new form, and the new form may indicate the date of transfer upon request of the registrant.

(c) Except as provided in subsection (d):

(d) In any county having a population of not less than eight hundred twenty-five thousand (825,000) nor more than eight hundred thirty thousand (830,000) according to the 1990 federal census or any subsequent federal census, when a person changes one's name on one's registration form, the record from the old form may be transferred onto the new form, and the new form may indicate the date of transfer upon request of the registrant.