HOUSE
Iowa IA-03 House2026
RACE AT A GLANCE
RACE TYPE
Incumbent running
Zach Nunn (R)
COOK PARTISAN VOTING INDEX
Last updated : Nov 17, 2025D +50
R +50
R +2
Race summary
GOP Rep. Zach Nunn won reelection by four points in 2024, running about even with Trump’s margin in the district. But Iowa Republicans are in a more complicated political environment this year.Key Dates
Filing Deadline: Mar 13, 2026
Primary Election: Jun 2, 2026
INCUMBENT
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CANDIDATES
Democrats
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DISTRICT DATA
Iowa - 03
South central: Des Moines, Ottumwa
Population Breakdown
Source: 2020 Census (VAP) for 2026
Past Presidential Results from this District
2024 Election Results
Source: Dave Leip
2020 Election Results
Source: Dave's Redistricting/VEST
RACE ANALYSIS
Race Analysis
Updated: Jan 15, 2026
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