and includes Dubuque, Cedar Rapids, Waterloo and Mason City. Freshman Republican Ashley Hinson, who flipped the district with 51.2% of the vote in 2020, sought reelection in the 2nd. Republican primary Candidates Nominee Ashley Hinson, incumbent U.S. Representative Endorsements Primary results Democratic primary Candidates Nominee Liz Mathis, state senator Declined Abby Finkenauer, former U.S. Representative (running for the U.S. Senate) Endorsements Primary results General election Predictions Polling Graphical summary Generic Republican vs. generic Democrat Results District 3 Before redistricting, the 3rd district encompassed southwestern Iowa, stretching from Des Moines to the state's borders with Nebraska and Missouri. The new 3rd is still anchored in Des Moines, but now covers south-central Iowa. The incumbent is Democrat Cindy Axne, who was re-elected with 48.9% of the vote in 2020. During the campaign, a research firm contracted by the Democratic Congressional Campaign Committee inappropriately obtained the military records of then-candidate Zach Nunn. Democratic primary Candidates Nominee Cindy Axne, incumbent U.S. Representative Endorsements Primary results Republican primary Candidates Nominee Zach Nunn, state senator Eliminated in primary Nicole Hasso, financial planner Gary Leffler, construction consultant Withdrawn Mary Ann Hanusa, former state representative (running for State Auditor) Endorsements Debates and forums Polling Primary results General election Predictions Polling Aggregate polls Graphical summary Generic Democrat vs. generic Republican Results District 4 Before redistricting, the 4th district was based in northwestern Iowa, including Sioux City, Ames, Mason City, Fort Dodge, Boone and Carroll. The redrawn 4th also covers much of southwestern Iowa, including Council Bluffs. The incumbent is Republican Randy Feenstra, who was elected with 62.0% of the vote in 2020. Republican primary Candidates Nominee Randy Feenstra, incumbent U.S. Representative Endorsements Primary results Democratic primary Candidates Nominee Ryan Melton, Nationwide insurance supervisor Declined J. D. Scholten, former professional baseball player and nominee for this district in 2018 and 2020 (running for state house) Primary results Other parties and independents Candidates Bryan Jack Holder, photographer and perennial candidate (Liberty) Independents Candidates General election Predictions Polling Generic Republican vs. generic Democrat Results Notes Partisan clients References External links (State affiliate of the U.S. League of Women Voters) Official campaign websites for 1st district candidates Christina Bohannan (D) for Congress Mariannette Miller-Meeks (R) for Congress Official campaign websites for 2nd district candidates Ashley Hinson (R) for Congress Liz Mathis (D) for Congress Official campaign websites for 3rd district candidates Cindy Axne (D) for Congress Zach Nunn (R) for Congress Official campaign