Presidential elections · 2000–2024
New Haven County, CT — Presidential Election Results (2000–2024)
In 2024, New Haven County, Connecticut voted for Kamala D. Harris (Democratic) by D+11.9 — 218,981 Democratic to 171,435 Republican of 397,987 votes cast. From 2020 to 2024 it shifted 5.5 points toward Republicans. That makes it 2.6 points more Republican than Connecticut overall (D+14.5).
Data: MIT Election Data & Science Lab, Harvard Dataverse.
Connecticut election results are reported for its eight legacy counties, like New Haven County. These no longer function as governments and don't match the planning-region boundaries used on modern Connecticut maps, but they remain the grain of the official returns.
Margin by election, 2000–2024
Democratic minus Republican, in points of all votes cast — blue bars Democratic, red Republican.
Every election in New Haven County
| Year | Democratic | Republican | Other | Dem share | Rep share | Margin |
|---|---|---|---|---|---|---|
| 2024 | 218,981 | 171,435 | 7,571 | 55.0% | 43.1% | D+11.9 |
| 2020 | 242,630 | 169,893 | 5,460 | 58.0% | 40.6% | D+17.4 |
| 2016 | 205,609 | 159,048 | 14,349 | 54.2% | 42.0% | D+12.3 |
| 2012 | 218,972 | 138,357 | 3,697 | 60.7% | 38.3% | D+22.3 |
| 2008 | 232,820 | 144,465 | 4,454 | 61.0% | 37.8% | D+23.1 |
| 2004 | 199,060 | 160,390 | 6,942 | 54.3% | 43.8% | D+10.6 |
| 2000 | 197,928 | 122,919 | 20,252 | 58.0% | 36.0% | D+22.0 |
Similar-sized counties in Connecticut
New Haven County presidential elections — FAQ
Who carried New Haven County in the 2024 presidential election?+
Kamala D. Harris (Democratic) carried New Haven County, Connecticut in 2024 by D+11.9, with 397,987 votes cast. Data: MIT Election Data & Science Lab.
How did New Haven County shift between 2020 and 2024?+
New Haven County shifted 5.5 points toward Republicans between 2020 (D+17.4) and 2024 (D+11.9).
Is New Haven County more Democratic or Republican than Connecticut overall?+
In 2024, New Haven County went D+11.9 while Connecticut overall went D+14.5 — 2.6 points more Republican 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.