Presidential elections · 2000–2024
Dubuque County, IA — Presidential Election Results (2000–2024)
In 2024, Dubuque County, Iowa voted for Donald J. Trump (Republican) by R+8.6 — 23,705 Democratic to 28,224 Republican of 52,770 votes cast. From 2020 to 2024 it shifted 5.4 points toward Republicans. That makes it 4.6 points more Democratic than Iowa overall (R+13.2).
Data: MIT Election Data & Science Lab, Harvard Dataverse.
Margin by election, 2000–2024
Democratic minus Republican, in points of all votes cast — blue bars Democratic, red Republican.
Every election in Dubuque County
| Year | Democratic | Republican | Other | Dem share | Rep share | Margin |
|---|---|---|---|---|---|---|
| 2024 | 23,705 | 28,224 | 841 | 44.9% | 53.5% | R+8.6 |
| 2020 | 25,657 | 27,358 | 911 | 47.6% | 50.7% | R+3.2 |
| 2016 | 22,850 | 23,460 | 3,411 | 46.0% | 47.2% | R+1.2 |
| 2012 | 28,768 | 21,280 | 846 | 56.5% | 41.8% | D+14.7 |
| 2008 | 28,611 | 18,651 | 691 | 59.7% | 38.9% | D+20.8 |
| 2004 | 26,561 | 20,100 | 382 | 56.5% | 42.7% | D+13.7 |
| 2000 | 22,341 | 16,462 | 1,520 | 55.4% | 40.8% | D+14.6 |
Dubuque County presidential elections — FAQ
Who carried Dubuque County in the 2024 presidential election?+
Donald J. Trump (Republican) carried Dubuque County, Iowa in 2024 by R+8.6, with 52,770 votes cast. Data: MIT Election Data & Science Lab.
How did Dubuque County shift between 2020 and 2024?+
Dubuque County shifted 5.4 points toward Republicans between 2020 (R+3.2) and 2024 (R+8.6).
Is Dubuque County more Democratic or Republican than Iowa overall?+
In 2024, Dubuque County went R+8.6 while Iowa overall went R+13.2 — 4.6 points more Democratic than the state.
Where does this election data come from?+
County-level presidential returns (2000–2024) come from the MIT Election Data and Science Lab (MEDSL), published on the Harvard Dataverse. pumsdata is an independent product that makes the data easy to map and compare, and is not affiliated with MEDSL or Harvard.