2024 United States Senate election in Massachusetts
The 2024 United States Senate election in Massachusetts took place on November 5, 2024. Democratic incumbent Senator Elizabeth Warren successfully ran for a third term, securing 59.81% of the vote. Warren was challenged by Republican attorney John Deaton. Primary elections took place on September 3, 2024.
This election marked the first time that Elizabeth Warren had lost Bristol County while running for the office. Warren underperformed Kamala Harris in the concurrent 2024 [United States presidential election in Massachusetts|presidential election], who won every county in the state.
Warren received 84,850 votes fewer than Harris. John Deaton ran as an anti-Trump centrist Republican.
Democratic primary
Candidates
Nominee
- Elizabeth Warren, incumbent U.S. senator
Declined
- Jake Auchincloss, U.S. representative for '
- Seth Moulton, U.S. representative for '
- Ayanna Pressley, U.S. representative for
- Michelle Wu, mayor of Boston ''''
Republican primary
Candidates
Nominee
- John Deaton, attorney
Eliminated in primary
- Robert Antonellis, nutrition software company owner and self-professed conspiracy theorist
- Ian Cain, president of the Quincy City Council
Declined
Workers Party primary
Candidates
Withdrawn
- Brandon Griffin
Libertarian primary
Candidates
Deceased
- Louis Marino, former Chelmsford town meeting representative
General election
Polling
Aggregate pollsElizabeth Warren vs. Robert Antonellis
| Poll source | Date administered | Sample size | Margin of error | Elizabeth Warren | Robert Antonellis | Other/Undecided |
| YouGov | May 17–30, 2023 | 700 | ± 4.4% | 50% | 23% | 27% |
Elizabeth Warren vs. Charlie Baker
| Poll source | Date administered | Sample size | Margin of error | Elizabeth Warren | Charlie Baker | Undecided |
| Fiscal Alliance Foundation | May 6–7, 2023 | 750 | ± 3.6% | 34% | 49% | 17% |
Elizabeth Warren vs. Ian Cain
| Poll source | Date administered | Sample size | Margin of error | Elizabeth Warren | Ian Cain | Other/Undecided |
| YouGov | May 17–30, 2023 | 700 | ± 4.4% | 48% | 24% | 28% |
Elizabeth Warren vs. Jonathan Kraft
| Poll source | Date administered | Sample size | Margin of error | Elizabeth Warren | Johnathan Kraft | Undecided |
| Suffolk University | February 2–5, 2023 | 1000 | ± 3.1% | 56% | 33% | 11% |
Elizabeth Warren vs. Aaron Packard
| Poll source | Date administered | Sample size | Margin of error | Elizabeth Warren | Aaron Packard | Other/Undecided |
| YouGov | May 17–30, 2023 | 700 | ± 4.4% | 48% | 23% | 29% |
Elizabeth Warren vs. Karyn Polito
| Poll source | Date administered | Sample size | Margin of error | Elizabeth Warren | Karyn Polito | Undecided |
| Fiscal Alliance Foundation | July 21–22, 2023 | 750 | ± 3.6% | 41% | 29% | 30% |
Results
By county
Counties that flipped from Democratic to RepublicanBy congressional district
Warren won all nine congressional districts.| District | Warren | Deaton | Representative |
| 56% | 44% | Richard Neal | |
| 59% | 41% | Jim McGovern | |
| 58% | 42% | Lori Trahan | |
| 56% | 44% | Jake Auchincloss | |
| 70% | 30% | Katherine Clark | |
| 57% | 43% | Seth Moulton | |
| 82% | 18% | Ayanna Pressley | |
| 59% | 40% | Stephen Lynch | |
| 51% | 49% | Bill Keating |