Presidential elections · 2000–2024
New Castle County, DE — Presidential Election Results (2000–2024)
In 2024, New Castle County, Delaware voted for Kamala D. Harris (Democratic) by D+32.6 — 180,700 Democratic to 90,868 Republican of 275,917 votes cast. From 2020 to 2024 it shifted 4.5 points toward Republicans. That makes it 17.9 points more Democratic than Delaware overall (D+14.7).
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 New Castle County
| Year | Democratic | Republican | Other | Dem share | Rep share | Margin |
|---|---|---|---|---|---|---|
| 2024 | 180,700 | 90,868 | 4,349 | 65.5% | 32.9% | D+32.6 |
| 2020 | 195,034 | 88,364 | 4,235 | 67.8% | 30.7% | D+37.1 |
| 2016 | 162,919 | 85,525 | 13,947 | 62.1% | 32.6% | D+29.5 |
| 2012 | 167,082 | 81,230 | 3,700 | 66.3% | 32.2% | D+34.1 |
| 2008 | 178,768 | 74,608 | 3,041 | 69.7% | 29.1% | D+40.6 |
| 2004 | 146,171 | 93,070 | 2,203 | 60.5% | 38.5% | D+22.0 |
| 2000 | 127,539 | 78,587 | 6,869 | 59.9% | 36.9% | D+23.0 |
Similar-sized counties in Delaware
New Castle County presidential elections — FAQ
Who carried New Castle County in the 2024 presidential election?+
Kamala D. Harris (Democratic) carried New Castle County, Delaware in 2024 by D+32.6, with 275,917 votes cast. Data: MIT Election Data & Science Lab.
How did New Castle County shift between 2020 and 2024?+
New Castle County shifted 4.5 points toward Republicans between 2020 (D+37.1) and 2024 (D+32.6).
Is New Castle County more Democratic or Republican than Delaware overall?+
In 2024, New Castle County went D+32.6 while Delaware overall went D+14.7 — 17.9 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.