Tennessee Code Title 2. Elections § 2-11-105

(a) Any person chosen to fill a vacancy shall be a bona fide member of the same party as the person such person replaces.

(b) If a vacancy occurs in the membership of the state election commission at the time when the general assembly is in session, the vacancy may be filled by the general assembly in the same manner as full terms are. A person elected to fill a vacancy shall serve only for the remainder of the unexpired term of the member whose place such person fills.

(c) If a vacancy occurs at a time when the general assembly is not in session, the vacancy shall be filled by the remaining members of the commission. If the remaining members of the commission are not able to agree on a successor to fill the vacancy within thirty (30) days of the time when such vacancy occurs, the secretary of state, the comptroller of the treasury, and the state treasurer, or a majority of those officers shall fill the vacancy. Persons selected to fill vacancies under this subsection (c) shall serve only until the next session of the general assembly, when the general assembly shall fill the vacancies as if they had occurred when the general assembly was in session.

(d) If the general assembly adjourns without filling any vacancies, vacancies shall be filled in the same manner as if they had occurred when the general assembly was not in session.