Bradley Byrne has won the runoff election in Alabama's 1st district.
The Associated Press reported the victory.
Byrne, a Democrat until 1997 and a onetime chancellor of the Alabama Community College System, defeated fellow Republican Dean Young, a tea party favorite.
Young, a real estate investor, made headlines this week when Mother Jones surfaced a 2002 quote from the tea partier saying gay rights activists should "go back to California." He's made other controversial statements about immgration, religion and President Barack Obama's birthplace.
Byrne will battle Democrat Burton LeFlore (D) and Independent candidates James Hall and Curtis Railey in the general election in December. The winner of the general election will fill the seat vacated by former Rep. Jo Bonner (R-Ala.), who announced in May he would resign to take a job with the University of Alabama.