The Tennessee House seat previously held by expelled state Representative Jeremy Durham will remain in Republican hands.
Former Army Colonel Sam Whitson of Franklin defeated Democrat Holly McCall in District 65 race by 42 percentage points.
Whitson had defeated Durham in the August primary following a state attorney general's report detailing allegations that Durham had had improper sexual contact with at least 22 women during his four years in office.
The House voted in September to formally oust Durham from his seat to prevent him from completing his term and qualifying for a state pension.
Democratic Representative Joe Armstrong of Knoxville resigned on the eve of the special session after being convicted in a federal tax fraud trial. His appointed successor, Rick Staples, was unopposed in the general election.