Republican Mike Naig will remain state agriculture secretary.
Voters on Tuesday choose Naig over Democrat Tim Gannon, a central Iowa farmer who previously worked for the U.S. Department of Agriculture.
Naig grew up on a farm in northwest Iowa and has worked at the state agriculture department since 2013. Gov. Kim Reynolds appointed him agriculture secretary in March and he received the GOP nomination at a state convention over four other candidates.
The Iowa Farm Bureau endorsed Naig and ran ads on his behalf.
Both candidates opposed policies by President Donald Trump that resulted in tariffs being imposed on Iowa crops. Gannon supported increasing the sales tax to fund a natural resource and outdoor recreation fund. Naig opposed the proposal.