Tennessee Code Title 9. Public Finances § 9-21-207

(a) No election upon a proposition for the issuance of general obligation bonds shall be necessary:

(b) If a petition protesting the issuance of the general obligation bonds signed by at least ten percent (10%) of the registered voters of the local government, determined as of the date of publication of the notice required in § 9-21-206, or that portion, if applicable, which is liable to be taxed therefor, is filed with the official charged with maintaining the records of the local government within twenty (20) days from the publication of the initial resolution, then no general obligation bonds shall be issued without the assent of the majority of the registered voters in the local government or a portion of the local government, if applicable, voting upon a proposition for the issuance of the general obligation bonds in the manner provided by §§ 9-21-209 and 9-21-210. The county election commission shall certify to the local government within fifteen (15) days of receipt by the county election commission of any petition filed hereunder, the total number of registered voters as of the date of publication of the notice and the total number of valid signatures of registered voters signing the petition. Registered voters shall not withdraw their signatures from a petition after signing the petition.