Iowa's 3rd Congressional District

Iowa's 3rd Congressional District is represented by Zachary (Zach) Nunn (Republican), who has held the seat since 2023. Nunn has an overall VoteSee report card grade of D, voted in 95% of roll-call votes on bills this Congress, and votes with the Republican majority 88% of the time. The district includes Des Moines, West Des Moines, and Ankeny. It takes in all or part of 21 counties, and 62% of residents live in Polk County. About 816,000 people live in the district, and the median household income is $80,844.

Current Representative

Zachary (Zach) Nunn (Republican) has represented Iowa's 3rd Congressional District since 2023.

See Zachary (Zach) Nunn's full voting record and issue positions →

2026 Election

U.S. House: Iowa 3rd District

Winner: Sarah Trone Garriott.

Incumbent Zach Nunn is running for re-election. 2 candidates were on the Nov 3, 2026 ballot.

Polls

Fewer than 2 polls ended in the last 30 days, so there is no average.

PollsterDatesSampleNunnGarriott
Ragnar Research Partners (R)Mar 12, 2026 – Mar 14, 2026400 LV48%42%

Polls compiled from Wikipedia; see each pollster for full results.

See the full 2026 race →

District Demographics

Source: American Community Survey 2020–2024 5-year estimates, 119th Congress boundaries.

How Nunn Voted Recently

Breaks with the Republican majority

Who Held This Seat Before

Members of Congress who previously represented Iowa's 3rd Congressional District. District lines are redrawn after each census, so earlier members may have represented a different area under this number.

Where the District Is

Iowa's 3rd Congressional District covers 10,673 square miles of land. Boundaries are for the current (119th) Congress.

Counties

Largest communities

Neighboring Districts

Iowa's U.S. Senators

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