1980Final resultsIncumbent defeated
1980 Democratic primary for Missouri Senate District 9
Missouri State Senate · Missouri
Lee Swinton (D) won with 42.5% of the vote, defeating Mary L. Gant (D) by 0.3 points.
Lee SwintonDemocrat · winner
42.5%5,942
Mary L. GantDemocrat · incumbent
42.3%5,906
Bob JacobiDemocrat
13.4%1,870
Thomas WinstonDemocrat
1.9%260
13,978 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET