You can vote in Tennessee absentee by-mail if you are sixty (60) years of age or older or meet any of the other eligibility requirements. Go here for information about requesting an absentee ballot.
Note: The deadline for the November 3 election is Tuesday, October 27. You may request an absentee by-mail ballot no earlier than ninety (90) days before the election and no later than seven (7) days before the election. To be processed for the next election, the application must be received by the election commission no later than seven (7) days before the election.