1970Final results
1970 election for Iowa House District 70
Iowa House of Representatives · Iowa
Joseph C. Johnston (D) won with 58.1% of the vote, defeating Shirley Porter (R) by 16.3 points.
Joseph C. JohnstonDemocrat · winner · incumbent
58.1%5,768
Shirley PorterRepublican
41.9%4,155
9,923 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