Incumbent Democratic attorney generalTom Miller has served in the position since 1995, and previously from 1979 to 1991. The Republican Party did not nominate anyone, but the Libertarian Party nominated Marco Battaglia.
Incumbent Democratic state treasurerMichael L. Fitzgerald, who has served in the position since 1983, ran for reelection to a tenth term in office.[10] Fitzgerald was unopposed in the primary and does not have a Republican challenger, however does have a challenger from the Libertarian party.
Incumbent Auditor Mary Mosiman, who has served since 2013 was eligible for re-election and was unopposed in the Republican primary. Attorney Rob Sand won the Democratic primary.
Republican Secretary of AgricultureBill Northey had served in the position since 2007. Northey was considering running for Iowa Governor, but after Governor Terry Branstad was nominated to be Ambassador to China he announced he would not run.[11][12] Northey had not ruled out running for reelection in 2018, but he said he would be willing to serve as lieutenant governor instead if asked.[13] In 2018, he was nominated by President Donald Trump to be Under Secretary of Agriculture for Farm and Foreign Agricultural Services and has since ruled out reelection. The office is currently held by Mike Naig, serving in an acting capacity.