1990Final results
1990 election for Iowa Governor
Governor · Iowa
Terry E. Branstad (R) won with 60.9% of the vote, defeating Donald D. Avenson (D) by 21.9 points.
Terry E. BranstadRepublican · winner
60.9%591,852
Donald D. AvensonDemocrat
39.1%379,372
971,224 votes
Source: Algara, Carlos; Amlani, Sharif (Harvard Dataverse)Updated Oct 5, 2026, 12:23 AM ET
The seat over time
D − R margin in this seat's races around 1990
Races before and after
Source: Algara, Carlos; Amlani, Sharif (Harvard Dataverse)Updated Oct 5, 2026, 12:23 AM ET