1970Final results
1970 election for Missouri House District 81
Missouri House of Representatives · Missouri
Mark Youngdahl (D) won with 57.8% of the vote, defeating William H. Guenther Jr. (R) by 15.6 points.
Mark YoungdahlDemocrat · winner
57.8%3,961
William H. Guenther Jr.Republican
42.2%2,890
6,851 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 1970
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET