1986Final results

1986 primary for Oklahoma Senate District 20

Name: 1986 primary for Oklahoma Senate District 20
Start: 1986-08-01
Location: Oklahoma

Oklahoma State Senate · Oklahoma

Dennis A. Coates (D) won with 52.4% of the vote, defeating Allen Robson (D) by 4.8 points.

Dennis A. CoatesDemocrat · winner

52.4%4,803

47.6%4,367

9,170 votes

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