2010Final results
2010 election for Iowa House District 18
Iowa House of Representatives · Iowa
Andrew Wenthe (D) won with 50.1% of the vote, defeating Roger Arthur (R) by 0.3 points.
Andrew WentheDemocrat · winner · incumbent
50.1%5,499
Roger ArthurRepublican
49.7%5,463
10,985 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 2010
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET