Tenn. Code Ann. § 8-4-301

If the comptroller of the treasury dies, resigns, or is, from any cause, disabled from performing the duties of office, the governor shall appoint some person well qualified to act in the comptroller of the treasury's stead, who shall take the same oaths, give the same bonds, in the same manner, be liable to the same penalties and receive the same salary and allowances as the regular comptroller of the treasury.