1988Final results
1988 election for Iowa Senate District 4
Iowa State Senate · Iowa
Richard Vandehoef (R) won with 69.0% of the vote, defeating Dennis Tangeman (D) by 37.9 points.
Richard VandehoefRepublican · winner · incumbent
69.0%14,924
Dennis TangemanDemocrat
31.0%6,717
21,641 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 1988
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET