IA-3
Iowa District 3
Tue, Nov 3 · Seat held by Zachary Nunn Republican since Jan 2023
Sarah GarriottDemocratic2 years in politicsZachary NunnRepublican · IncumbentAge 47 · 3 years in Congress
No published poll names both candidates.Last result · 2024 general: Zachary Nunn (R) 51.8, Lanon Baccam (D) 47.9
- Last election
- Zachary Nunn (Republican) won by 3.9 points, 2024
- Margin since 2022
- 3.2 points toward Republicans
- On the 2026 ballot
- 2 candidates
Side by side
Garriott left, Nunn right- Total receipts, 2025-2026 cycle, through Oct 14
- $8.1M
- $6.1M
- Cash on hand
- $1.2M
- $621K
- Donor-based spectrum
- LiberalCentristConservativeGarriottNunn
- Record
- 3-0
- 5-0
- Years in politics
- 2
- 3
- Age on Election Day
- Not available
- 47
Sarah Garriott on fec.gov. Zachary Nunn on fec.gov. One or more are matched to the FEC by name, party and seat, so a total could belong to someone else.
How these are counted
Total receipts line of each candidate’s principal campaign committee, 2025-2026 cycle. Other sites may show career, six-year or all-committee totals, which differ. The spectrum is a published research score, not our rating. How this works. Record is wins and losses in the races in our results files, the same count as each profile.
More about this race
Candidates on the ballot
- Sarah GarriottDemocratic
- Zachary NunnIncumbentRepublican
Source: sos.iowa.gov (PDF), dated Aug 19
Shift since 2022: 3.2 points toward Republicans (Republican by 0.7 in 2022, Republican by 3.9 in 2024).
All Iowa districts
Select a shape for details. Arrow keys move between shapes.
2024 US House margin
- D 15+ pts
- D 5 to 15 pts
- D under 5 pts
- R under 5 pts
- R 5 to 15 pts
- R 15+ pts
- Other winner
- No data
Show these districts as a list (4)
- Iowa District 1· Mariannette Miller-Meeks (R), Republican by 0.2 points, 2024
- Iowa District 2· Ashley Hinson (R), Republican by 15.6 points, 2024
- Iowa District 3· Zachary Nunn (R), Republican by 3.9 points, 2024
- Iowa District 4· Randy Feenstra (R), Republican by 34.3 points, 2024
Map settings
Vote in Iowa
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History (25 elections for this seat)
- Votes for listed candidates
- 412,905
- Election day
- November 5, 2024
- District map
- Same as today
US House, Iowa District 3, 2024, every candidate Candidate Party Votes and share Share RepublicanZachary NunnWon Republican 213,74651.8% DemocraticLanon Baccam Democratic 197,96247.9% Scattered write-insName as filed: Writein Write-in 1,1970.3% - Votes for listed candidates
- 310,913
- Election day
- November 8, 2022
- District map
- Same as today
US House, Iowa District 3, 2022, every candidate Candidate Party Votes and share Share RepublicanZachary NunnWonName as filed: Zach Nunn Republican 156,26250.3% DemocraticCynthia Axne Democratic 154,11749.6% Scattered write-insName as filed: Writein Write-in 5340.2% - Votes for listed candidates
- 447,947
- Election day
- November 3, 2020
- District map
- Older district map (2012 to 2020)
US House, Iowa District 3, 2020, every candidate Candidate Party Votes and share Share DemocraticCynthia AxneWon Democratic 219,20548.9% RepublicanDavid Young Republican 212,99747.5% LibertarianBryan Jack Holder Libertarian 15,3613.4% Scattered write-insName as filed: Writein Write-in 3840.1% - Votes for listed candidates
- 356,241
- Election day
- November 6, 2018
- District map
- Older district map (2012 to 2020)
US House, Iowa District 3, 2018, every candidate Candidate Party Votes and share Share DemocraticCindy AxneWon Democratic 175,64249.3% RepublicanDavid Young Republican 167,93347.1% LibertarianBryan Jack Holder Libertarian 7,2672.0% OtherMark Elworth Jr Other 2,0150.6% GreenPaul Knupp Green 1,8880.5% IndependentJoe Grandanette Independent 1,3010.4% Scattered write-insName as filed: Writein Write-in 1950.1% - Votes for listed candidates
- 390,287
- Election day
- November 8, 2016
- District map
- Older district map (2012 to 2020)
US House, Iowa District 3, 2016, every candidate Candidate Party Votes and share Share RepublicanDavid YoungWon Republican 208,59853.4% DemocraticJim Mowrer Democratic 155,00239.7% LibertarianBryan Jack Holder Libertarian 15,3723.9% IndependentClaudia Addy Independent 6,3481.6% IndependentJoe Grandanette Independent 4,5181.2% Scattered write-insName as filed: Writein Write-in 4490.1% - Votes for listed candidates
- 282,066
- Election day
- November 4, 2014
- District map
- Older district map (2012 to 2020)
US House, Iowa District 3, 2014, every candidate Candidate Party Votes and share Share RepublicanDavid YoungWon Republican 148,81452.8% DemocraticStaci Appel Democratic 119,10942.2% LibertarianEdward B Wright Libertarian 9,0543.2% IndependentBryan Jack Holder Independent 4,3601.5% Scattered write-insName as filed: Writein Write-in 7290.3% - Votes for listed candidates
- 386,842
- Election day
- November 6, 2012
- District map
- Older district map (2012 to 2020)
US House, Iowa District 3, 2012, every candidate Candidate Party Votes and share Share RepublicanTom LathamWon Republican 202,00052.2% DemocraticLeonard L Boswell Democratic 168,63243.6% IndependentScott G Batcher Independent 9,3522.4% OtherDavid Rosenfeld Other 6,2861.6% Scattered write-insName as filed: Writein Write-in 5720.1% - Votes for listed candidates
- 240,756
- Election day
- November 2, 2010
- District map
- Older district map (2002 to 2010)
US House, Iowa District 3, 2010, every candidate Candidate Party Votes and share Share DemocraticLeonard L BoswellWon Democratic 122,14750.7% RepublicanBrad Zaun Republican 111,92546.5% OtherRebecca Williamson Other 6,2582.6% Scattered write-insName as filed: Writein Write-in 4260.2% - Votes for listed candidates
- 313,639
- Election day
- November 4, 2008
- District map
- Older district map (2002 to 2010)
US House, Iowa District 3, 2008, every candidate Candidate Party Votes and share Share DemocraticLeonard L BoswellWon Democratic 176,90456.4% RepublicanKim Schmett Republican 132,13642.1% OtherFrank V Forrestal Other 4,5991.5% - Votes for listed candidates
- 223,082
- Election day
- November 7, 2006
- District map
- Older district map (2002 to 2010)
US House, Iowa District 3, 2006, every candidate Candidate Party Votes and share Share DemocraticLeonard L BoswellWon Democratic 115,76951.9% RepublicanJeff Lamberti Republican 103,72246.5% OtherHelen Meyers Other 3,5911.6% - Votes for listed candidates
- 304,319
- Election day
- November 2, 2004
- District map
- Older district map (2002 to 2010)
US House, Iowa District 3, 2004, every candidate Candidate Party Votes and share Share DemocraticLeonard L BoswellWon Democratic 168,00755.2% RepublicanStan Thompson Republican 136,09944.7% Scattered write-insName as filed: Writein Write-in 2130.1% - Votes for listed candidates
- 215,985
- Election day
- November 5, 2002
- District map
- Older district map (2002 to 2010)
US House, Iowa District 3, 2002, every candidate Candidate Party Votes and share Share DemocraticLeonard L BoswellWon Democratic 115,36753.4% RepublicanStan Thompson Republican 97,28545.0% LibertarianJeffrey J Smith Libertarian 2,6891.2% OtherEdwin B Fruit Other 5690.3% Scattered write-insName as filed: Writein Write-in 750.0% - Votes for listed candidates
- 248,926
- Election day
- November 7, 2000
- District map
- Older district map (1992 to 2000)
US House, Iowa District 3, 2000, every candidate Candidate Party Votes and share Share DemocraticLeonard L BoswellWon Democratic 156,32762.8% RepublicanJay Marcus Republican 83,81033.7% OtherSue Atkinson Other 5,5632.2% LibertarianJoe Seehusen Libertarian 2,2630.9% OtherJim Hennager Other 8510.3% Scattered write-insName as filed: Writein Write-in 1120.0% - Votes for listed candidates
- 189,684
- Election day
- November 3, 1998
- District map
- Older district map (1992 to 2000)
US House, Iowa District 3, 1998, every candidate Candidate Party Votes and share Share DemocraticLeonard L BoswellWon Democratic 107,94756.9% RepublicanLarry McKibben Republican 78,06341.2% OtherCharles P Connolly Other 2,1801.1% IndependentJoe Seehusen Independent 1,4940.8% - Votes for listed candidates
- 234,875
- Election day
- November 5, 1996
- District map
- Older district map (1992 to 2000)
US House, Iowa District 3, 1996, every candidate Candidate Party Votes and share Share DemocraticLeonard L BoswellWon Democratic 115,91449.4% RepublicanMike Mahaffey Republican 111,89547.6% OtherJay B Marcus Other 3,1941.4% OtherEdward T Rusk Other 2,5341.1% LibertarianDick Kruse Libertarian 1,2610.5% Scattered write-insName as filed: Writein Write-in 770.0% - Votes for listed candidates
- 193,531
- Election day
- November 8, 1994
- District map
- Older district map (1992 to 2000)
US House, Iowa District 3, 1994, every candidate Candidate Party Votes and share Share RepublicanJim LightfootWon Republican 111,86257.8% DemocraticElaine Baxter Democratic 79,31041.0% OtherDerrick P Grimmer Other 2,2821.2% Scattered write-insName as filed: Writein Write-in 770.0% - Votes for listed candidates
- 257,175
- Election day
- November 3, 1992
- District map
- Older district map (1992 to 2000)
US House, Iowa District 3, 1992, every candidate Candidate Party Votes and share Share RepublicanJim LightfootWon Republican 125,93149.0% DemocraticElaine Baxter Democratic 121,06347.1% OtherLarry Chroman Other 10,1814.0% - Votes for listed candidates
- 101,780
- Election day
- November 6, 1990
- District map
- Older district map (1982 to 1990)
US House, Iowa District 3, 1990, every candidate Candidate Party Votes and share Share DemocraticDavid R NagleWon Democratic 100,94799.2% Scattered write-insName as filed: Writein Write-in 8330.8% - Votes for listed candidates
- 203,932
- Election day
- November 8, 1988
- District map
- Older district map (1982 to 1990)
US House, Iowa District 3, 1988, every candidate Candidate Party Votes and share Share DemocraticDavid R NagleWon Democratic 129,20463.4% RepublicanDonald B Redfern Republican 74,68236.6% Scattered write-insName as filed: Writein Write-in 460.0% - Votes for listed candidates
- 152,920
- Election day
- November 4, 1986
- District map
- Older district map (1982 to 1990)
US House, Iowa District 3, 1986, every candidate Candidate Party Votes and share Share DemocraticDavid R NagleWon Democratic 83,50454.6% RepublicanJohn McIntee Republican 69,38645.4% Scattered write-insName as filed: Writein Write-in 300.0% - Votes for listed candidates
- 220,311
- Election day
- November 6, 1984
- District map
- Older district map (1982 to 1990)
US House, Iowa District 3, 1984, every candidate Candidate Party Votes and share Share RepublicanCooper EvansWon Republican 133,73760.7% DemocraticJoe Johnston Democratic 86,57439.3% - Votes for listed candidates
- 187,675
- Election day
- November 2, 1982
- District map
- Older district map (1982 to 1990)
US House, Iowa District 3, 1982, every candidate Candidate Party Votes and share Share RepublicanCooper EvansWon Republican 104,07255.5% DemocraticLynn G Cutler Democratic 83,58144.5% Scattered write-insName as filed: Writein Write-in 220.0% - Votes for listed candidates
- 209,945
- Election day
- November 4, 1980
- District map
- Older district map (1972 to 1980)
US House, Iowa District 3, 1980, every candidate Candidate Party Votes and share Share RepublicanCooper EvansWon Republican 107,86951.4% DemocraticLynne G Cutler Democratic 101,73548.5% OtherJames E Suppus Other 3410.2% - Votes for listed candidates
- 138,539
- Election day
- November 7, 1978
- District map
- Older district map (1972 to 1980)
US House, Iowa District 3, 1978, every candidate Candidate Party Votes and share Share RepublicanCharles E GrassleyWon Republican 103,65974.8% DemocraticJohn Knudson Democratic 34,88025.2% - Votes for listed candidates
- 208,938
- Election day
- November 2, 1976
- District map
- Older district map (1972 to 1980)
US House, Iowa District 3, 1976, every candidate Candidate Party Votes and share Share RepublicanCharles E GrassleyWon Republican 117,95756.5% DemocraticStephen J Rapp Democratic 90,98143.5%
All rows: MIT Election Data and Science Lab, U.S. House 1976-2024, retrieved Oct 28, 2026
District numbers are reused after each redistricting, so rows on older lines cover different territory than today's Iowa District 3.
Download and cite
Cite this page
Election Wrld. (2026). Iowa District 3, US House results. https://www.electionwrld.com/ia/congress/3. Retrieved October 30, 2026.
Embed this seat
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<p style="font-size:13px">Data: <a href="https://www.electionwrld.com">Election Wrld</a>, CC BY 4.0</p>Paste this into any web page. It shows the seat, its last result and the next election.
Sources
Sources
- Used for
- web/data/results/house/{ST}.json. The Dataverse API refuses this file behind a guestbook, so the identical file was taken from two public GitHub copies (Hackquantumcpp/snoutcounter-midterms-2026-model data/1976-2024-house.csv and sta199-f26/sta199-f26.github.io _data/gerrymander/1976-2024-house.tab), which are byte-identical to each other and match the md5 a9566ac393913a1af343284e837c17bb that Dataverse lists for dataset version 15.0 (2026-03-09). sha256 76eec42483ee9f0fc5cf6e377442c783d1ae6eefa929729fd6561a69bab47f2a.
- License
- CC0 1.0
- Retrieved
- October 28, 2026
- Link
- https://doi.org/10.7910/DVN/IG0UN2
- Used for
- cd.topo.json, sld/*.topo.json
- License
- US Census Bureau, public domain
- Retrieved
- October 28, 2026
- Link
- https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Legislative/MapServer
- Used for
- web/data/officials/congress.json (name, party, bioguide, official site, service start) and web/data/people (birth year, committees, social media handles and profile links; links only, nothing copied from the platforms). As-of: the files saved in data/raw/people on 2026-10-29.
- License
- CC0-1.0
- Retrieved
- October 28, 2026
- Link
- https://unitedstates.github.io/congress-legislators/legislators-current.json
DataState data (JSON)Sources: MIT Election Data and Science Lab, U.S. House 1976-2024, FEC, DIME (ODC-BY), Portraits: unitedstates/images (public domain)Data as of Oct 28, 2026