1986Flipped from DemocraticFinal resultsIncumbent defeated
1986 election for Oklahoma Senate District 40
Oklahoma State Senate · Oklahoma
Leo Kingston (R) won with 66.8% of the vote, defeating Mike Combs (D) by 33.6 points, a seat Democrats won last time.
Leo KingstonRepublican · winner
66.8%11,756
Mike CombsDemocrat · incumbent
33.2%5,849
17,605 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The seat over time
D − R margin in this seat's races around 1986
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET