2012Final results
2012 election for Iowa Senate District 48
Iowa State Senate · Iowa
Dan Zumbach (R) won with 50.8% of the vote, defeating Nate Willems (D) by 1.7 points.
Dan ZumbachRepublican · winner
50.8%16,415
Nate WillemsDemocrat
49.1%15,858
32,290 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