Republican Tressa Nunley and Democrat Karen Gaddis advance to a special election in July to fill a seat left vacant by the resignation of state representative Dan Kirby of Tulsa.
Nunley and Gaddis each won their party's primary election Tuesday with 64 percent of the vote.
Dan Kirby stepped down on March 1st amid a sexual harassment scandal. District 75 includes much of east Tulsa.
That special election is set for Tuesday, July 11th.