1980Final resultsIncumbent defeated

1980 Democratic primary for Missouri House District 159

Name: 1980 Democratic primary for Missouri House District 159
Start: 1980-08-01
Location: Missouri

Missouri House of Representatives · Missouri

Dennis Ziegenhorn (D) won with 56.2% of the vote, defeating Clifford Laplant (D) by 12.4 points.

Dennis ZiegenhornDemocrat · winner

56.2%3,932

Clifford LaplantDemocrat · incumbent

43.8%3,067

6,999 votes

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