1968Final resultsIncumbent defeated
1968 election for Iowa Senate District 15
Iowa State Senate · Iowa
Harold A. Thordsen (R) won with 50.1% of the vote, defeating Joseph W. Cassidy (D) by 0.2 points.
Harold A. ThordsenRepublican · winner
50.1%11,939
Joseph W. CassidyDemocrat · incumbent
49.9%11,889
23,828 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 1968
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET