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2026 midtermsResults

2026 results · Iowa · Iowa 3rd District

Sarah Trone Garriott, the Democrat, flips Iowa's 3rd District

Donald Trump carried the district by 4.4 points in 2024; this year's count is a 11.6-point move toward the Democrats. The Republicans held the seat before the election.

Iowa 3rd District: votes counted for each candidate
CandidateVotesShareShare of the vote
Sarah Trone GarriottDemocrat189,21753.5%
Zach NunnRepublican, incumbent163,44146.2%
Write-in8690.3%

Called by Call the Map, Nov 3, 10:43 PM EST · 97% counted.

About 97% of the expected vote counted353,527 votesCount last changed Nov 7, 6:28 PM ESTSource: Iowa Secretary of State

The map

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About the seat

Iowa's 3rd District takes in all or part of 21 counties. The Republicans held it before this election. Its voters went R+4.3 for president in 2024. Its move from that vote, 11.6 points toward the Democrats, ranks 4 of 4 among the state's districts, counting from the largest move toward the Democrats.

2024 president
R+4.3
2024 House race, same lines
R+3.8
Move from 2024, rank in state
4 of 4
  1. Polk County62%
  2. Dallas County16%
  3. Wapello County3%
  4. Madison County2%
  5. Cass County1%
  6. Page County1%
  7. Guthrie County1%
  8. Appanoose County1%
  9. 13 more11%

Shares are of the votes counted this year. The 2024 House figure is the same district, on the same lines.

What the count shows

Added together, the 21 counties compared moved 11.4 points toward the Democrats from the 2024 presidential vote.

The counties compared cast 84% as many votes as in 2024, from 88% in Dallas County to 70% in Taylor County.

Wapello County moved most: R+30.4 for president in 2024, R+15.9 this year

The 10 counties with the largest moves from the 2024 presidential vote, among those with 2,000 or more votes for president in 2024 and a quarter of that counted, and at least half a percent of the state's 2024 vote. Each line runs from the 2024 margin to this year’s.

CountyR+60EvenD+60Move
Wapello County11,018 votes14.5 pts → D
Clarke County3,490 votes12.8 pts → D
Wayne County2,257 votes12.7 pts → D
Appanoose County4,791 votes12.6 pts → D
Union County4,630 votes11.7 pts → D
Davis County2,964 votes11.4 pts → D
Dallas County55,673 votes10.4 pts → D
Decatur County2,793 votes10.4 pts → D
Polk County219,575 votes10.3 pts → D
Adams County1,612 votes10.0 pts → D

2024 president 2026

Polk County added 18,560 net votes for Garriott against the 2024 margin, 43% of the district's change

Across the 21 counties compared, the margin moved by 42,969 votes toward Garriott: this year’s lead in votes against the 2024 presidential lead in votes, county by county. The figure counts voters who changed sides and differences in who turned out alike; the count cannot tell them apart.

  1. Polk County+18,560 Garriott
  2. Dallas County+6,174 Garriott
  3. Wapello County+2,517 Garriott
  4. Madison County+1,641 Garriott
  5. Appanoose County+1,417 Garriott
  6. Cass County+1,133 Garriott
  7. Union County+1,060 Garriott
  8. Lucas County+932 Garriott

1 county Donald Trump carried in 2024 is led by Garriott this year

Striped on the map above. Largest first.

  • Dallas CountyR+4.7D+5.7

How the vote came in

Garriott did best among absentee ballots (D+28.5) and Nunn among Election Day votes(R+2.8).

  1. Election Day239,534 votes, 68% of the countR+2.8
  2. Absentee113,993 votes, 32% of the countD+28.5

The office’s own categories, as it reports them. Margins are within each kind of vote.

U.S. HouseBefore the election R 4–0, now D 3–1

  1. D+9.2Bohannan
  2. D+4.0James
  3. D+7.3Garriott
  4. R+18.1McGowan

won leads, still counting changed party. Margins are the leader’s share minus the runner-up’s, in points.

Every count on this page is the official count published by the Iowa Secretary of State. Counts are unofficial until the state certifies them. The 2024 comparison is the presidential vote, Kamala Harris against Donald Trump, on the same ground. Margins are the Democrat minus the Republican, in points of all votes.