Dr. Richard Briggs defeated incumbent Stacey Campfield by a wide margin in the Republican primary for the Senate District 7 seat.
Campfield served in the state Senate since 2010. Briggs, a local surgeon and veteran, serves on the Knox County Commission.
Briggs outpaced Campfield by more than two to one.
"We really had a good campaign plan," said Dr. Briggs in a speech at the Crowne Plaza. "We had a good team. I'm a very conservative person. I just think people were looking for change, a change from what we've had previously."
Senator Campfield is in the headlines often for some of his controversial statements and legislation during his time in office.
RELATED: Most controversial Campfield moments
Briggs will face Democratic challenger Cheri Siler in the November general election.