Tennessee Code Title 2. Elections § 2-9-105

(a) The county election commission shall have the proper ballot labels placed on the voting machines and shall have the machines put in proper order for voting with the registering counters set at zero (000), the counting mechanisms locked, and each machine sealed with a pre-numbered seal. The voting machine technician shall certify in writing that, before sealing each machine but after preparing it for an election, such technician has tested each voting lever and that each machine is in proper working order.

(b) Before examining the voting machines to determine whether they are properly set up, the commission shall mail notices to the chairs of the county executive committees of the political parties and to independent candidates stating where and when the machines will be examined. Each county executive committee chair and county primary board chair may designate a representative who may be present to see that the machines are properly prepared for use in the election.

(c) When the machines have been examined, the party representatives and either the commission or the voting machine technician shall make a certificate in writing which shall be filed in the county election commission office stating the number of machines, whether all of the machines are set at zero (000), the number registered on each protective counter and the number on each metal seal with which the machines are sealed.

(d) The keys for each machine shall be sealed in an envelope showing the location where the machine is to be used, the number of the machine, the number on the protective counter, and the seal number.

(e) The commission may delegate its duty to examine the machines to the voting machine technician.