Early Voting dates are set by the State of Tennessee, however, the hours are set by individual counties.
For the March "Super Tuesday" Primary, the Hours are...
M - W - F from 8AM to 1PM
T - Th from 4PM to 7PM
Sat from 8AM to NOON
Early Voting Begins Feburary 12 and Ends Feburary 25
All Early Voting takes place at the Election Commission Office at 301 West Main Street. (That's in the back of the old hospital, now the Board of Education. From the Courthouse Square, proceed up Tatum Street.)