2018 Iowa elections

The Iowa elections, 2018 were held in the U.S. state of Iowa on November 6, 2018. A closed primary election was held on June 5, 2018. All of Iowa's executive officers were up for election as well as all four of Iowa's seats in the United States House of Representatives, 25 (half) of the seats in the Iowa Senate, and all 100 seats in the Iowa House of Representatives.

Governorship
Incumbent Republican governor Terry Branstad, who has served for two consecutive and six total terms as Iowa Governor, resigned to be the United States Ambassador to China in 2017. Lieutenant Governor Kim Reynolds assumed the governorship and was seeking a full term.

Attorney general
Incumbent Democratic attorney general Tom 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.

Democratic primary

 * Deidre DeJear
 * Jim Mowrer

Republican primary

 * Paul Pate, incumbent

Treasurer
Incumbent Democratic state treasurer Michael L. Fitzgerald, who has served in the position since 1983, ran for reelection to a tenth term in office. Fitzgerald was unopposed in the primary and does not have a Republican challenger, however does have a challenger from the Libertarian party.

Auditor
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.

Results
[[File:Iowa State Auditor Election Results 2018.svg|thumb|Results by county: {{legend|#1666cb|Sand—70–80%}} {{legend|#4389e3|Sand—60–70%}} {{legend|#86b6f2|Sand—50–60%}} {{legend|#b9d7ff|Sand—40–50%}}

{{legend|#AA0000|Mosiman—80-90%}} {{legend|#D40000|Mosiman—70-80%}} {{legend|#CC2F4A|Mosiman—60-70%}} {{legend|#E27F90|Mosiman—50-60%}} {{legend|#F2B3BE|Mosiman—40-50%}}

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Secretary of Agriculture
Republican Secretary of Agriculture Bill 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. 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. 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.

Republican primary

 * Ray Gaesser, farmer and soybean producer
 * Chad Ingels
 * Craig Lang, former president of the Farm Bureau
 * Mike Naig, incumbent
 * Dan Zumbach, State Senator

United States House of Representatives
All of Iowa's four seats in the United States House of Representatives were up for election in 2018.

Iowa General Assembly
The 25 odd-numbered Iowa Senate seats were up for election in 2018, as were all 100 Iowa House seats.