2012Final results
2012 election for Iowa Senate District 4
Iowa State Senate · Iowa
Dennis Guth (R) won with 52.8% of the vote, defeating Bob Jennings (D) by 5.7 points.
Dennis GuthRepublican · winner
52.8%16,033
Bob JenningsDemocrat
47.1%14,299
30,360 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 2012
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET