# 2024 United States presidential election in Iowa

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The 2024 United States presidential election in Iowa was held on Tuesday, November 5, 2024, as part of the 2024 United States presidential election in which all 50 states plus the District of Columbia participated. Iowa voters chose electors to represent them in the Electoral College via a popular vote. The state of Iowa has six electoral votes in the Electoral College, following reapportionment due to the 2020 United States census in which the state neither gained nor lost a seat.
For most of the race, Iowa was expected to be a safe red state. A poll performed by Selzer and Co. and published by The Des Moines Register on November 2 claimed Harris to be up by 3%, leading some to predict a far closer race than initially expected. Selzer retired from polling following the election, a decision she claimed she had made the year before.
Despite some polls predicting the state could be a very narrow win for Trump or even a win for Harris, Donald Trump won the state in a landslide, winning the state by 13.2 percentage points, the widest margin for any candidate since 1972.

## Caucuses
### Democratic caucuses

During the Iowa Democratic caucuses, in-person caucusing focusing only on party business was held on January 15. Voting on candidates was done exclusively via mail-in ballots from January 12 until Super Tuesday, March 5, 2024. This was the result of a compromise between the Iowa Democratic Party and the Democratic National Committee (DNC). Iowa traditionally holds its race first during the presidential primary and caucuses season, but the DNC originally wanted South Carolina to instead hold its race first on February 3.
Iowa Democratic caucus, January 12 – March 5, 2024 :
| Candidate | Votes | Percentage | Actual delegate count | Actual delegate count | Actual delegate count |
| Candidate | Votes | Percentage | Pledged | Unpledged | Total |
| Joe Biden (incumbent) | 12,337 | 90.37% | 40 | | 40 |
| Uncommitted | 614 | 4.50% | 0 | | 0 |
| Dean Phillips | 394 | 2.89% | 0 | | 0 |
| Marianne Williamson | 307 | 2.25% | 0 | | 0 |
| Total: | 13,652 | 100.00% | 40 | 6 | 46 |

### Republican caucuses

The Iowa Republican caucuses were held on January 15, 2024, the first-in-the-nation nomination contest of the 2024 Republican primaries. Former president Donald Trump won the primary with the largest margin of victory for a non-incumbent in the Iowa caucuses. Trump's overwhelming victory in the state established his position early as the frontrunner.
Iowa Republican precinct caucuses, January 15, 2024 :
| Candidate | Votes | Percentage | Actual delegate count | Actual delegate count | Actual delegate count |
| Candidate | Votes | Percentage | Bound | Unbound | Total |
| Donald Trump | 56,243 | 51.00% | 20 | 0 | 20 |
| Ron DeSantis | 23,491 | 21.30% | 9 | 0 | 9 |
| Nikki Haley | 21,027 | 19.07% | 8 | 0 | 8 |
| Vivek Ramaswamy | 8,430 | 7.64% | 3 | 0 | 3 |
| Ryan Binkley | 768 | 0.70% | 0 | 0 | 0 |
| Asa Hutchinson | 188 | 0.17% | 0 | 0 | 0 |
| Other | 90 | 0.08% | 0 | 0 | 0 |
| Chris Christie (withdrawn) | 35 | 0.03% | 0 | 0 | 0 |
| Total: | 110,272 | 100.00% | 40 | 0 | 40 |

### Libertarian caucuses

The Iowa Libertarian caucuses were held on January 15, 2024, its first as a recognized party in the state. 2022 U.S. Senate candidate Chase Oliver from Georgia won the non-binding preferential vote with 42.7% of the vote.
2024 Iowa Libertarian presidential caucuses :
| Candidate | Votes | Percentage |
| Chase Oliver | 38 | 42.70 |
| Michael Rectenwald | 15 | 16.85 |
| Mike ter Maat | 12 | 13.48 |
| Joshua Smith | 12 | 13.48 |
| Vivek Ramaswamy | 4 | 4.49 |
| Mario Perales | 2 | 2.25 |
| Robert Sansone | 2 | 2.25 |
| Jacob Hornberger | 1 | 1.12 |
| Lars Mapstead | 1 | 1.12 |
| Art Olivier | 1 | 1.12 |
| None of the above | 1 | 1.12 |
| Total | 89 | 100.00 |

## General election
### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Likely R | November 4, 2024 |
| Inside Elections | Tilt R | November 4, 2024 |
| Sabato's Crystal Ball | Likely R | November 4, 2024 |
| Decision Desk HQ/The Hill | Likely R | November 3, 2024 |
| CNalysis | Tilt R | November 4, 2024 |
| CNN | Solid R | November 3, 2024 |
| The Economist | Safe R | November 3, 2024 |
| 538 | Likely R | November 3, 2024 |
| NBC News | Solid R | November 3, 2024 |
| Split Ticket | Lean R | November 2, 2024 |

### Polling

Donald Trump vs. Kamala Harris
Aggregate polls
| Source of poll aggregation | Dates administered | Dates updated | Kamala Harris Democratic | Donald Trump Republican | Other / Undecided | Margin |
| 270ToWin | October 2 – November 4, 2024 | November 4, 2024 | 45.3% | 50.0% | 4.7% | Trump +4.7% |
| Silver Bulletin | through November 3, 2024 | November 4, 2024 | 45.4% | 49.8% | 4.8% | Trump +4.4% |
| Average | Average | Average | 45.4% | 49.9% | 4.7% | Trump +4.5% |
| Poll source | Date(s) administered | Sample size | Margin of error | Donald Trump Republican | Kamala Harris Democratic | Other / Undecided |
| InsiderAdvantage (R) | November 2–3, 2024 | 800 (LV) | ± 3.5% | 52% | 46% | 2% |
| SoCal Strategies (R) | November 2–3, 2024 | 501 (RV) | ± 4.4% | 50% | 43% | 7% |
| SoCal Strategies (R) | November 2–3, 2024 | 435 (LV) | ± 4.4% | 52% | 44% | 4% |
| Emerson College | November 1–2, 2024 | 800 (LV) | ± 3.4% | 53% | 43% | 4% |
| Emerson College | November 1–2, 2024 | 800 (LV) | ± 3.4% | 54% | 45% | 1% |
| Cygnal (R) | September 27–28, 2024 | 600 (LV) | ± 4.0% | 51% | 45% | 4% |
Donald Trump vs. Kamala Harris vs. Robert F. Kennedy Jr. vs. Chase Oliver
| Poll source | Date(s) administered | Sample size | Margin of error | Donald Trump Republican | Kamala Harris Democratic | Robert F. Kennedy Jr. Independent | Chase Oliver Libertarian | Other / Undecided |
| Selzer & Co. | October 28–31, 2024 | 808 (LV) | ± 3.4% | 44% | 47% | 3% | 0% | 6% |
| Selzer & Co. | September 8–11, 2024 | 656 (LV) | ± 3.8% | 47% | 43% | 6% | 1% | 3% |
Donald Trump vs. Joe Biden
| Poll source | Date(s) administered | Sample size | Margin of error | Donald Trump Republican | Joe Biden Democratic | Other / Undecided |
| Cygnal (R) | July 8–9, 2024 | 600 (LV) | ± 4.0% | 51% | 39% | 10% |
| John Zogby Strategies | April 13–21, 2024 | 405 (LV) | – | 47% | 45% | 8% |
| Selzer & Co. | February 25–28, 2024 | 640 (LV) | ± 3.9% | 48% | 33% | 19% |
| Cygnal (R) | February 13–14, 2024 | 600 (LV) | ± 3.9% | 49% | 40% | 11% |
| John Zogby Strategies | January 2–4, 2024 | 500 (LV) | – | 51% | 39% | 10% |
| Emerson College | December 15–17, 2023 | 1,094 (RV) | ± 2.9% | 48% | 40% | 12% |
| Emerson College | October 1–4, 2023 | 464 (RV) | ± 4.5% | 44% | 34% | 22% |
| Cygnal (R) | September 28–29, 2023 | 506 (LV) | ± 4.3% | 47% | 38% | 15% |
| Emerson College | September 7–9, 2023 | 896 (RV) | ± 3.2% | 50% | 39% | 11% |
| HarrisX | August 17–21, 2023 | 1,952 (LV) | – | 47% | 41% | 12% |
| Big Data Poll (R) | July 9–12, 2023 | 1,057 (LV) | ± 3.0% | 42% | 36% | 22% |
| Emerson College | May 19–22, 2023 | 1,064 (RV) | ± 2.9% | 49% | 38% | 13% |
| Cygnal (R) | April 3–4, 2023 | 600 (LV) | ± 4.0% | 46% | 40% | 14% |
| Emerson College | October 2–4, 2022 | 959 (LV) | ± 3.1% | 47% | 39% | 14% |
| Cygnal (R) | October 2–4, 2022 | 600 (LV) | ± 4.0% | 51% | 41% | 8% |
| Cygnal (R) | July 13–14, 2022 | 600 (LV) | ± 4.0% | 51% | 40% | 9% |
| Cygnal (R) | February 20–22, 2022 | 610 (LV) | ± 3.9% | 53% | 38% | 9% |
| Selzer & Co. | November 7–10, 2021 | 658 (LV) | ± 3.8% | 51% | 40% | 9% |
| Cygnal (R) | October 18–19, 2021 | 600 (LV) | ± 4.0% | 54% | 41% | 5% |
Donald Trump vs. Joe Biden vs. Robert F. Kennedy Jr. vs. Chase Oliver
| Poll source | Date(s) administered | Sample size | Margin of error | Donald Trump Republican | Joe Biden Democratic | Robert F. Kennedy Jr. Independent | Chase Oliver Libertarian | Other / Undecided |
| Selzer & Co. | June 9–14, 2024 | 632 (LV) | ± 3.9% | 50% | 32% | 9% | 2% | 7% |
Donald Trump vs. Joe Biden vs. Cornel West
| Poll source | Date(s) administered | Sample size | Margin of error | Donald Trump Republican | Joe Biden Democratic | Cornel West Green | Other / Undecided |
| Emerson College | September 7–9, 2023 | 896 (RV) | ± 3.2% | 48% | 35% | 5% | 12% |
Donald Trump vs. Gavin Newsom
| Poll source | Date(s) administered | Sample size | Margin of error | Donald Trump Republican | Gavin Newsom Democratic | Other / Undecided |
| Cygnal (R) | September 28–29, 2023 | 506 (LV) | ± 4.3% | 48% | 34% | 18% |
Donald Trump vs. Robert F. Kennedy Jr.
| Poll source | Date(s) administered | Sample size | Margin of error | Donald Trump Republican | Robert Kennedy Jr. Independent | Other / Undecided |
| John Zogby Strategies | April 13–21, 2024 | 405 (LV) | – | 39% | 45% | 16% |
Robert F. Kennedy Jr. vs. Joe Biden
| Poll source | Date(s) administered | Sample size | Margin of error | Robert Kennedy Jr. Independent | Joe Biden Democratic | Other / Undecided |
| John Zogby Strategies | April 13–21, 2024 | 405 (LV) | – | 50% | 39% | 11% |
Ron DeSantis vs. Joe Biden
| Poll source | Date(s) administered | Sample size | Margin of error | Ron DeSantis Republican | Joe Biden Democratic | Other / Undecided |
| Big Data Poll (R) | July 9–12, 2023 | 1,057 (LV) | ± 3.0% | 38% | 36% | 26% |
| Emerson College | May 19–22, 2023 | 1,064 (RV) | ± 2.9% | 45% | 38% | 17% |
| Cygnal (R) | April 3–4, 2023 | 600 (LV) | ± 4.0% | 48% | 38% | 14% |
Generic Republican vs. Joe Biden
| Poll source | Date(s) administered | Sample size | Margin of error | Generic Republican | Joe Biden Democratic | Other / Undecided |
| Cygnal (R) | September 28–29, 2023 | 506 (LV) | ± 4.3% | 49% | 33% | 18% |

### Results

2024 United States presidential election in Iowa :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Donald TrumpJD Vance | 927,019 | 55.73% | +2.64% |
| | Democratic | Kamala HarrisTim Walz | 707,278 | 42.52% | −2.37% |
| | We the People | Robert F. Kennedy Jr. (withdrawn)Nicole Shanahan (withdrawn) | 13,122 | 0.79% | N/A |
| | Libertarian | Chase OliverMike ter Maat | 7,218 | 0.43% | −0.73% |
| | Socialism and Liberation | Claudia De la CruzKarina Garcia | 1,427 | 0.09% | N/A |
| | Independent | Shiva AyyaduraiCrystal Ellis | 424 | 0.03% | N/A |
| | Socialist | Bill StoddenStephanie Cholensky | 361 | 0.02% | N/A |
| | Write-in | Write-in | 6,657 | 0.40% | +0.02% |
| Total votes | Total votes | Total votes | 1,663,506 | 100.00% | N/A |

#### By county

| County | Donald Trump Republican | Donald Trump Republican | Kamala Harris Democratic | Kamala Harris Democratic | Various candidates Other parties | Various candidates Other parties | Margin | Margin | Total |
| County | # | % | # | % | # | % | # | % | Total |
| Adair | 2,916 | 71.47% | 1,086 | 26.62% | 78 | 1.91% | 1,830 | 44.85% | 4,080 |
| Adams | 1,517 | 71.05% | 576 | 26.98% | 42 | 1.97% | 941 | 44.07% | 2,135 |
| Allamakee | 4,857 | 66.37% | 2,350 | 32.11% | 111 | 1.52% | 2,507 | 34.26% | 7,318 |
| Appanoose | 4,704 | 72.55% | 1,686 | 26.00% | 94 | 1.45% | 3,018 | 46.55% | 6,484 |
| Audubon | 2,214 | 68.14% | 970 | 29.86% | 65 | 2.00% | 1,244 | 38.28% | 3,249 |
| Benton | 9,549 | 65.81% | 4,739 | 32.66% | 221 | 1.52% | 4,810 | 33.15% | 14,509 |
| Black Hawk | 30,572 | 48.60% | 31,299 | 49.76% | 1,035 | 1.65% | -727 | -1.16% | 62,906 |
| Boone | 9,199 | 59.72% | 5,895 | 38.27% | 309 | 2.01% | 3,304 | 21.45% | 15,403 |
| Bremer | 8,799 | 60.24% | 5,571 | 38.14% | 237 | 1.62% | 3,228 | 22.10% | 14,607 |
| Buchanan | 6,790 | 63.16% | 3,766 | 35.03% | 194 | 1.80% | 3,024 | 28.13% | 10,750 |
| Buena Vista | 4,962 | 65.84% | 2,462 | 32.67% | 113 | 1.50% | 2,500 | 33.17% | 7,537 |
| Butler | 5,784 | 71.89% | 2,144 | 26.65% | 118 | 1.47% | 3,640 | 45.24% | 8,046 |
| Calhoun | 3,708 | 72.75% | 1,328 | 26.05% | 61 | 1.20% | 2,380 | 46.70% | 5,097 |
| Carroll | 7,814 | 70.14% | 3,153 | 28.30% | 173 | 1.55% | 4,661 | 41.84% | 11,140 |
| Cass | 5,007 | 69.38% | 2,077 | 28.78% | 133 | 1.84% | 2,930 | 40.60% | 7,217 |
| Cedar | 6,390 | 60.03% | 4,075 | 38.28% | 179 | 1.68% | 2,315 | 21.75% | 10,644 |
| Cerro Gordo | 12,627 | 54.85% | 9,955 | 43.25% | 438 | 1.90% | 2,672 | 11.60% | 23,020 |
| Cherokee | 4,398 | 72.04% | 1,611 | 26.39% | 96 | 1.57% | 2,787 | 45.65% | 6,105 |
| Chickasaw | 4,234 | 67.86% | 1,919 | 30.76% | 86 | 1.38% | 2,315 | 37.10% | 6,239 |
| Clarke | 3,140 | 70.10% | 1,265 | 28.24% | 74 | 1.65% | 1,875 | 41.86% | 4,479 |
| Clay | 6,047 | 70.80% | 2,367 | 27.71% | 127 | 1.49% | 3,680 | 43.09% | 8,541 |
| Clayton | 6,255 | 66.54% | 3,017 | 32.10% | 128 | 1.36% | 3,238 | 34.44% | 9,400 |
| Clinton | 13,964 | 58.48% | 9,472 | 39.67% | 442 | 1.85% | 4,492 | 18.81% | 23,878 |
| Crawford | 4,651 | 71.06% | 1,812 | 27.69% | 82 | 1.25% | 2,839 | 43.37% | 6,545 |
| Dallas | 32,374 | 51.42% | 29,402 | 46.70% | 1,185 | 1.88% | 2,972 | 4.72% | 62,961 |
| Davis | 3,027 | 76.56% | 878 | 22.21% | 49 | 1.24% | 2,149 | 54.35% | 3,954 |
| Decatur | 2,711 | 72.51% | 957 | 25.60% | 71 | 1.90% | 1,754 | 46.91% | 3,739 |
| Delaware | 6,984 | 68.89% | 2,978 | 29.37% | 176 | 1.74% | 4,006 | 39.52% | 10,138 |
| Des Moines | 10,794 | 56.65% | 7,935 | 41.64% | 325 | 1.71% | 2,859 | 15.01% | 19,054 |
| Dickinson | 7,775 | 69.21% | 3,297 | 29.35% | 162 | 1.44% | 4,478 | 39.86% | 11,234 |
| Dubuque | 28,224 | 53.48% | 23,705 | 44.92% | 841 | 1.59% | 4,519 | 8.56% | 52,770 |
| Emmet | 3,422 | 71.32% | 1,315 | 27.41% | 61 | 1.27% | 2,107 | 43.91% | 4,798 |
| Fayette | 6,325 | 64.23% | 3,334 | 33.85% | 189 | 1.92% | 2,991 | 30.38% | 9,848 |
| Floyd | 4,744 | 62.01% | 2,782 | 36.37% | 124 | 1.62% | 1,962 | 25.64% | 7,650 |
| Franklin | 3,431 | 70.02% | 1,393 | 28.43% | 76 | 1.55% | 2,038 | 41.59% | 4,900 |
| Fremont | 2,711 | 71.44% | 1,023 | 26.96% | 61 | 1.61% | 1,688 | 44.48% | 3,795 |
| Greene | 3,211 | 65.79% | 1,603 | 32.84% | 67 | 1.37% | 1,608 | 32.95% | 4,881 |
| Grundy | 4,998 | 69.94% | 2,019 | 28.25% | 129 | 1.81% | 2,979 | 41.69% | 7,146 |
| Guthrie | 4,446 | 67.95% | 1,974 | 30.17% | 123 | 1.88% | 2,472 | 37.78% | 6,543 |
| Hamilton | 5,004 | 65.87% | 2,482 | 32.67% | 111 | 1.46% | 2,522 | 33.20% | 7,597 |
| Hancock | 4,336 | 73.01% | 1,523 | 25.64% | 80 | 1.35% | 2,813 | 47.37% | 5,939 |
| Hardin | 5,790 | 68.44% | 2,553 | 30.18% | 117 | 1.38% | 3,237 | 38.26% | 8,460 |
| Harrison | 5,566 | 69.93% | 2,245 | 28.21% | 148 | 1.86% | 3,321 | 41.72% | 7,959 |
| Henry | 6,439 | 67.07% | 2,995 | 31.20% | 166 | 1.73% | 3,444 | 35.87% | 9,600 |
| Howard | 3,157 | 65.09% | 1,619 | 33.38% | 74 | 1.53% | 1,538 | 31.71% | 4,850 |
| Humboldt | 3,770 | 74.17% | 1,236 | 24.32% | 77 | 1.51% | 2,534 | 49.85% | 5,083 |
| Ida | 2,771 | 75.81% | 826 | 22.60% | 58 | 1.59% | 1,945 | 53.21% | 3,655 |
| Iowa | 6,068 | 62.95% | 3,400 | 35.27% | 171 | 1.77% | 2,668 | 27.68% | 9,639 |
| Jackson | 7,074 | 65.49% | 3,567 | 33.02% | 160 | 1.48% | 3,507 | 32.47% | 10,801 |
| Jasper | 12,701 | 62.88% | 7,141 | 35.35% | 356 | 1.76% | 5,560 | 27.53% | 20,198 |
| Jefferson | 4,353 | 52.16% | 3,788 | 45.39% | 205 | 2.46% | 565 | 6.77% | 8,346 |
| Johnson | 26,087 | 30.11% | 58,846 | 67.92% | 1,711 | 1.97% | -32,759 | -37.81% | 86,644 |
| Jones | 6,820 | 62.11% | 3,942 | 35.90% | 218 | 1.99% | 2,878 | 26.21% | 10,980 |
| Keokuk | 3,869 | 75.13% | 1,219 | 23.67% | 62 | 1.20% | 2,650 | 51.46% | 5,150 |
| Kossuth | 5,983 | 71.25% | 2,284 | 27.20% | 130 | 1.55% | 3,699 | 44.05% | 8,397 |
| Lee | 10,152 | 62.67% | 5,659 | 34.94% | 387 | 2.39% | 4,493 | 27.73% | 16,198 |
| Linn | 54,237 | 44.11% | 66,358 | 53.97% | 2,364 | 1.92% | -12,121 | -9.86% | 122,959 |
| Louisa | 3,584 | 69.70% | 1,480 | 28.78% | 78 | 1.52% | 2,104 | 40.92% | 5,142 |
| Lucas | 3,400 | 73.18% | 1,169 | 25.16% | 77 | 1.66% | 2,231 | 48.02% | 4,646 |
| Lyon | 5,899 | 84.25% | 1,023 | 14.61% | 80 | 1.14% | 4,876 | 69.64% | 7,002 |
| Madison | 6,864 | 68.45% | 3,008 | 30.00% | 156 | 1.56% | 3,856 | 38.45% | 10,028 |
| Mahaska | 8,207 | 74.98% | 2,577 | 23.54% | 162 | 1.48% | 5,630 | 51.44% | 10,946 |
| Marion | 13,289 | 67.92% | 5,928 | 30.30% | 349 | 1.78% | 7,361 | 37.62% | 19,566 |
| Marshall | 9,815 | 56.83% | 7,134 | 41.31% | 321 | 1.86% | 2,681 | 15.52% | 17,270 |
| Mills | 5,671 | 68.71% | 2,456 | 29.76% | 126 | 1.53% | 3,215 | 38.95% | 8,253 |
| Mitchell | 3,736 | 64.74% | 1,943 | 33.67% | 92 | 1.59% | 1,793 | 31.07% | 5,771 |
| Monona | 3,331 | 71.84% | 1,236 | 26.66% | 70 | 1.51% | 2,095 | 45.18% | 4,637 |
| Monroe | 3,104 | 74.65% | 1,002 | 24.10% | 52 | 1.25% | 2,102 | 50.55% | 4,158 |
| Montgomery | 3,486 | 68.70% | 1,508 | 29.72% | 80 | 1.58% | 1,978 | 38.98% | 5,074 |
| Muscatine | 11,152 | 56.46% | 8,212 | 41.58% | 388 | 1.96% | 2,940 | 14.88% | 19,752 |
| O'Brien | 5,998 | 79.71% | 1,428 | 18.98% | 99 | 1.32% | 4,570 | 60.73% | 7,525 |
| Osceola | 2,623 | 81.23% | 555 | 17.19% | 51 | 1.58% | 2,068 | 64.04% | 3,229 |
| Page | 5,153 | 70.38% | 2,060 | 28.13% | 109 | 1.49% | 3,093 | 42.25% | 7,322 |
| Palo Alto | 3,576 | 71.78% | 1,338 | 26.86% | 68 | 1.36% | 2,238 | 44.92% | 4,982 |
| Plymouth | 10,661 | 76.31% | 3,104 | 22.22% | 206 | 1.47% | 7,557 | 54.09% | 13,971 |
| Pocahontas | 2,727 | 76.13% | 796 | 22.22% | 59 | 1.65% | 1,931 | 53.91% | 3,582 |
| Polk | 112,240 | 43.70% | 140,075 | 54.54% | 4,523 | 1.76% | -27,835 | -10.84% | 256,838 |
| Pottawattamie | 26,335 | 59.10% | 17,468 | 39.20% | 756 | 1.70% | 8,867 | 19.90% | 44,559 |
| Poweshiek | 5,758 | 57.51% | 4,067 | 40.62% | 188 | 1.88% | 1,691 | 16.89% | 10,013 |
| Ringgold | 2,015 | 75.02% | 638 | 23.75% | 33 | 1.23% | 1,377 | 51.27% | 2,686 |
| Sac | 4,100 | 75.09% | 1,289 | 23.61% | 71 | 1.30% | 2,811 | 51.48% | 5,460 |
| Scott | 45,976 | 51.01% | 42,479 | 47.13% | 1,678 | 1.86% | 3,497 | 3.88% | 90,133 |
| Shelby | 4,600 | 70.71% | 1,811 | 27.84% | 94 | 1.45% | 2,789 | 42.87% | 6,505 |
| Sioux | 16,053 | 84.49% | 2,626 | 13.82% | 322 | 1.69% | 13,427 | 70.67% | 19,001 |
| Story | 21,665 | 43.74% | 26,765 | 54.04% | 1,096 | 2.21% | -5,100 | -10.30% | 49,526 |
| Tama | 5,379 | 62.43% | 3,070 | 35.63% | 167 | 1.94% | 2,309 | 26.80% | 8,616 |
| Taylor | 2,381 | 77.28% | 666 | 21.62% | 34 | 1.10% | 1,715 | 55.66% | 3,081 |
| Union | 4,044 | 67.25% | 1,874 | 31.17% | 95 | 1.58% | 2,170 | 36.08% | 6,013 |
| Van Buren | 2,785 | 76.83% | 778 | 21.46% | 62 | 1.71% | 2,007 | 55.37% | 3,625 |
| Wapello | 9,479 | 65.00% | 4,896 | 33.57% | 208 | 1.43% | 4,583 | 31.43% | 14,583 |
| Warren | 19,486 | 59.40% | 12,712 | 38.75% | 606 | 1.85% | 6,774 | 20.65% | 32,804 |
| Washington | 7,119 | 61.43% | 4,297 | 37.08% | 172 | 1.48% | 2,822 | 24.35% | 11,588 |
| Wayne | 2,426 | 77.66% | 643 | 20.58% | 55 | 1.76% | 1,783 | 57.08% | 3,124 |
| Webster | 10,850 | 64.78% | 5,641 | 33.68% | 257 | 1.53% | 5,209 | 31.10% | 16,748 |
| Winnebago | 3,636 | 64.45% | 1,909 | 33.84% | 97 | 1.72% | 1,727 | 30.61% | 5,642 |
| Winneshiek | 6,427 | 53.65% | 5,321 | 44.42% | 231 | 1.93% | 1,106 | 9.23% | 11,979 |
| Woodbury | 25,969 | 60.50% | 16,145 | 37.62% | 807 | 1.88% | 9,824 | 22.88% | 42,921 |
| Worth | 2,715 | 63.33% | 1,508 | 35.18% | 64 | 1.49% | 1,207 | 28.15% | 4,287 |
| Wright | 3,853 | 67.32% | 1,770 | 30.93% | 100 | 1.75% | 2,083 | 36.39% | 5,723 |
| Totals | 927,019 | 55.73% | 707,278 | 42.52% | 29,209 | 1.76% | 219,741 | 13.21% | 1,663,506 |
Counties that flipped from Democratic to Republican
* Scott (largest city: Davenport)

#### By congressional district

Trump won all four congressional districts.
| District | Trump | Harris | Representative |
| 1st | 53.29% | 44.86% | Mariannette Miller-Meeks |
| 2nd | 54.11% | 44.15% | Ashley Hinson |
| 3rd | 51.33% | 46.94% | Zach Nunn |
| 4th | 64.83% | 33.47% | Randy Feenstra |

## Analysis

An Upper Midwestern state previously considered a battleground and a bellwether state for decades, Iowa voted significantly more Republican than the nation-at-large in both 2016 and 2020 and is now considered a moderately red state at the federal and state levels. Republican Donald Trump won the state by a comfortable margin of 8.2% while losing nationally in 2020, despite polls indicating a close race. Biden became the first Democrat to be elected president without winning Iowa since Jimmy Carter in 1976. Furthermore, during the 2022 midterms, all three statewide incumbent Republicans (Governor Kim Reynolds, Secretary of Agriculture Mike Naig, and Secretary of State Paul Pate) won reelection by more than 18%, two of three statewide incumbent Democrats (28-year incumbent Attorney General Tom Miller and 40-year incumbent Treasurer Michael Fitzgerald) lost to Republican challengers, and the remaining incumbent Democrat (four-year incumbent Auditor Rob Sand) won by fewer than 3,000 votes, or 0.24%. Republicans also won all four of Iowa's U.S. House seats.
Iowa handed Republican Donald Trump a decisive victory, doing so by a margin of 219,741 votes. This election marks the third consecutive cycle in which Iowa voted for the Republican candidate in a presidential election. Notably, Trump improved his margins in 98 of 99 counties and gained significant support across all demographics, performing better in suburban, rural, and urban areas. Trump became the first Republican to win Scott County since Ronald Reagan in 1984. This is the first election since 1968 that Iowa voted to the right of Alaska.