Republican Tommy Tuberville is running to unseat Democratic Senator Doug Jones in Alabama.
Jones is the lone Democratic Senator from the Deep South.
He barely won a December 2017 special election for the Senate seat.
He faces an uphill battle against Tuberville.
Tuberville is a former Auburn University football coach.
He has earned President Donald Trump's endorsement.
Polls in Alabama close at 7 p.m.
Local time and 8 p.m.