Presidential elections · 2000–2024
Middlesex County, MA — Presidential Election Results (2000–2024)
In 2024, Middlesex County, Massachusetts voted for Kamala D. Harris (Democratic) by D+39.2 — 554,471 Democratic to 235,118 Republican of 814,832 votes cast. From 2020 to 2024 it shifted 5.7 points toward Republicans. That makes it 14.0 points more Democratic than Massachusetts overall (D+25.2).
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 Middlesex County
| Year | Democratic | Republican | Other | Dem share | Rep share | Margin |
|---|---|---|---|---|---|---|
| 2024 | 554,471 | 235,118 | 25,243 | 68.0% | 28.9% | D+39.2 |
| 2020 | 617,196 | 226,956 | 25,195 | 71.0% | 26.1% | D+44.9 |
| 2016 | 520,360 | 219,793 | 43,881 | 66.4% | 28.0% | D+38.3 |
| 2012 | 471,804 | 267,321 | 15,045 | 62.6% | 35.4% | D+27.1 |
| 2008 | 464,484 | 245,769 | 15,778 | 64.0% | 33.9% | D+30.1 |
| 2004 | 440,862 | 237,815 | 10,283 | 64.0% | 34.5% | D+29.5 |
| 2000 | 404,043 | 198,914 | 54,091 | 61.5% | 30.3% | D+31.2 |
Middlesex County presidential elections — FAQ
Who carried Middlesex County in the 2024 presidential election?+
Kamala D. Harris (Democratic) carried Middlesex County, Massachusetts in 2024 by D+39.2, with 814,832 votes cast. Data: MIT Election Data & Science Lab.
How did Middlesex County shift between 2020 and 2024?+
Middlesex County shifted 5.7 points toward Republicans between 2020 (D+44.9) and 2024 (D+39.2).
Is Middlesex County more Democratic or Republican than Massachusetts overall?+
In 2024, Middlesex County went D+39.2 while Massachusetts overall went D+25.2 — 14.0 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.