1978Final results

1978 Democratic primary runoff for Oklahoma Senate District 40

Name: 1978 Democratic primary runoff for Oklahoma Senate District 40
Start: 1978-09-01
Location: Oklahoma

Oklahoma State Senate · Oklahoma

Mike Combs (D) won with 55.1% of the vote, defeating Ernest Istook (D) by 10.1 points.

Mike CombsDemocrat · winner

55.1%4,613

44.9%3,765

8,378 votes

Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET