1974Flipped from RepublicanFinal results
1974 election for Iowa House District 70
Iowa House of Representatives · Iowa
Bill Dieleman (D) won with 62.8% of the vote, defeating Dolores Underwood (R) by 25.7 points, a seat Republicans won last time.
Bill DielemanDemocrat · winner
62.8%5,984
Dolores UnderwoodRepublican
37.2%3,538
9,522 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 1974
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET