Craig Hitt, who has been elected to three terms, will run this year for the state House of Representatives.
The Republican made his plans official Thursday afternoon.
Hitt is running in District 84, the seat being vacated by Tad Campbell, who is not seeking re-election.
"Serving as a supervisor here in Lauderdale County, I've had the opportunity to work with a lot of county officials throughout this area, municipal officials in this area and even folks on the state level. So I feel like I've built some relationships that will be good for this community and this area, and as I continue on with District 84 and working for the people statewide."
Hitt says his business background would be an asset in the state legislature.
Hitt will face opposition in the primary. William Shirley of Clarke County is also running.
William Lee of Quitman, a Democrat, is also seeking the office.