The 2018 Iowa House of Representative elections took place on November 6, 2018, to elect representatives from all 100 districts. The winners would serve in the 88th General Assembly, apportioned among the states based on the 2010 United States census. The Republican Party retained control of the House, while the Democratic Party gained a net of five seats.
The elections for Iowa's four congressional districts, governor, lieutenant governor, statewide officeholders, and the Iowa Senate were also held on this date.
Incumbent Democrat Helen Miller announced her retirement and did not run for reelection. Republicans Ann Meyer, a registered nurse, and Gary Waechter, ran. Democrat Megan Srinivas, a physician, announced her candidacy.
The primary election was held on June 5, 2018.
Republican incumbent Mike Sexton sought reelection for a third term. he faced former 2012 and 2016 Presidential Candidate Tom Hoefling in the Tepublican primary. Jake Thompson ran for the Democratic nomination.
Republican primary
Democratic primary
Thompson faced no primary challenger.
Incumbent Republican Gary Worthan ran unopposed.
Republican Brian Best ran for a third term. He faced Democrat Peter Leo in the general election.
Incumbent Democrat Chris Hall ran unopposed for a fifth term.
Incumbent Democrat Timothy Kacena ran against Republican Robert Henderson, whom Kacena had narrowly defeated in 2016.
Incumbent Democrat Charlie McConkey ran for reelection against Republican LeAnn Hughes in the general election.
Democrat Steve Gorman nearly pulled off an upset against Republican incumbent Mary Ann Hanusa. Libertarian Party candidate Steve Sechrest also ran.
Republican incumbent Matt Windschitl ran against Democrat Jan Creasman.
Steven Holt ran unopposed in the general election.
House Majority leader Chris Hagenow, who previously represented District 43, planned to move with his family to run in the 19th District. Democrat Gregg Gustafson and independent candidate Richard Dedor also ran.
Incumbent Greg Heartsill did not seek reelection.
Democratic primary
Democrats Ann Fields and Zachary Pendroy both ran.
Republican primary
Jon Thorup and Jon Van Wyk both vied for this seat.
Kristin Sunde challenged Republican incumbent Peter Cownie in a key West Des Moines suburban seat.