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HOUSE RACE

Iowa 3rd District


Raters differ by degree: Likely D to Toss-Up. All four

Where this race stands

Published ratings for Iowa 3rd District, one row per rater
Rater Rating Added
Cook Political Report Lean D
Sabato's Crystal Ball Tossup
Split Ticket Likely D
FiftyPlusOne Likely D
Thin Gold model Lean D · about 3 in 4 chance for Democrats

Our model's lean sits inside the range of the raters covering this race.

Model output from our win-odds simulation, under calibration review. Methodology

See the full forecast →
On the November ballot
Sarah Trone Garriott Democrat
vs
Zach Nunn Republican

Roster: Iowa Secretary of State · state candidate list · as of August 19, 2026

No verified polling margin for this race yet. A figure on file has no verified source document, so it is not shown. How we source polling data.

Iowa's 3rd congressional district carries a partisan baseline of R+2.76, which makes the current ratings from multiple forecasters notable. Cook Political Report rates the race "Lean D" as of October 9, 2026. Sabato's Crystal Ball rated it "Tossup" as of August 10, 2026, while Split Ticket rated it "Likely D" as of September 24, 2026, and FiftyPlusOne rated it "Likely D" as of September 13, 2026. The convergence of three of four trackers toward Democrats in a district with a Republican-leaning baseline indicates forecasters are pricing in conditions beyond partisanship alone. The most recent polling, from March 2026, showed Republicans leading by six points. The divergence between that early survey and subsequent rating assessments points to forecasters applying additional structural judgments as the cycle progressed. With a district baseline modestly favoring Republicans and ratings that lean the other direction, Iowa's 3rd is among the more closely watched House races in the Midwest this cycle. : https://www.the-downballot.com/p/the-downballots-calculations-of-presidential : https://en.wikipedia.org/wiki/2026_United_States_House_of_Representatives_elections_in_Iowa : https://www.cookpolitical.com/ratings/house-race-ratings

Campaign finance · FEC

Sarah Trone Garriott

Raised
$5.9M
Cash on hand
$3.9M

Campaign finance · FEC

Zach Nunn

Raised
$4.9M
Cash on hand
$3.6M

Federal Election Commission filings, as of Jun 30, 2026.

District demographics · Census ACS


Median household income
$80,844 (±$1,044)
Median gross rent, monthly
$1,108 (±$13)
People below the poverty line
10.3% (±0.4%)
People without health insurance
5.5% (±0.3%)
Renter households paying 30% or more of income on rent
44.0% (±1.7%)

Source: U.S. Census Bureau, American Community Survey 5-year estimates 2020-2024 , 119th Congress district lines (this district is unchanged for 2026); the survey window ends Dec 31, 2024. Survey estimates; the figure after ± is the 90% margin of error. The renter-burden share is derived by Thin Gold from two published Census percentages. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Election information


Voter registration deadline
October 19, 2026, per the federal form; confirm with your state (U.S. Election Assistance Commission, National Mail Voter Registration Form, as of October 10, 2026)
Early voting
Not shown. We have not yet built a reader for this state's election office, so no state-published date is shown.

What is not on this page

  • Candidate issue positions are not shown. We list a position only when it is tied to a named, dated source.
  • No individual poll results are compiled for this race.
  • The previous result for this seat is not shown: we hold no certified results record for it yet.
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