1990Final results
1990 election for Iowa House District 66
Iowa House of Representatives · Iowa
Daniel Jay (D) won with 51.8% of the vote, defeating Joan M. Mattingly (R) by 3.6 points.
Daniel JayDemocrat · winner · incumbent
51.8%4,424
Joan M. MattinglyRepublican
48.2%4,116
8,540 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 1990
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET