OKLAHOMA CITY — A Tulsa fast-food restaurateur has won the Republican nomination in the race for the open U.S. House seat in Tulsa.

Kevin Hern defeated longtime Tulsa prosecutor Tim Harris in Tuesday's GOP primary runoff to advance to the November ballot in the race for the state's only open congressional seat. Hern will face Democratic nominee Tim Gilpin in November.

The seat was previously held by U.S. Rep. Jim Bridenstine, a Republican tapped by President Donald Trump to be administrator of NASA.

Republicans have held the seat for more than 30 years and are heavily favored to keep it in November.

The 56-year-old Hern runs a company that owns and operates a chain of McDonald's restaurants in northeast Oklahoma.

A former political consultant has defeated a retired university professor for the Democratic nomination to Congress in Oklahoma's 5th Congressional District.

Kendra Horn defeated Tom Guild in Tuesday's runoff election and will face incumbent Republican Rep. Steve Russell in the November general election.

Horn is making her first political race after working as a consultant, a press secretary to former Rep. Brad Carson and directing a nonprofit agency. She led a six-person field of candidates in the June primary with 44 percent of the vote.

Guild was the Democratic nominee in 2012, losing in the general election. He ran unsuccessfully for the party's nomination in 2014 and 2016.

Russell is seeking a third term in the district that includes much of Oklahoma City and has not elected a Democrat in more than 40 years.

Community organizer Ashley Nicole McCray has won the Democratic nomination for a seat on the Oklahoma Corporation Commission.

McCray defeated Blake Cummings in a Democratic runoff for the nomination Tuesday and will face the Republican nominee in the Nov. 6 general election for the seat on the three-member commission that regulates the Oklahoma oil and gas industry as well as utilities.