# 2024 United States Senate election in Massachusetts

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2024 :
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2006: 2008
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2018: Gender Identity Anti-Discrimination
2020: pending :
Boston
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2023 :
Massachusetts portal :
vte :
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, who won the state by 25.2 points in the concurrent presidential election, as well as every county.

## Democratic primary
### Candidates
#### Nominee

* Elizabeth Warren, incumbent U.S. senator (2013–present)

#### Declined

* Jake Auchincloss, U.S. representative for Massachusetts's 4th congressional district (2021–present) (ran for re-election)
* Seth Moulton, U.S. representative for Massachusetts's 6th congressional district (2015–present) (ran for re-election)
* Ayanna Pressley, U.S. representative for Massachusetts's 7th congressional district (2019–present) (endorsed Warren, ran for re-election)
* Michelle Wu, mayor of Boston (2021–present) (endorsed Warren)

### Endorsements

U.S. senators
* Ed Markey, Massachusetts (2013–present)
U.S. representatives
* Gabby Giffords, AZ-08 (2007–2012)
* Ayanna Pressley, MA-07 (2019–present)
State officials
* Maura Healey, Governor of Massachusetts (2023–present)
Local officials
* Michelle Wu, mayor of Boston (2021–present)
Organizations
* EMILY's List
* Feminist Majority PAC
* Giffords
* Harvard College Democrats
* Humane Society Legislative Fund
* J Street PAC
* Joint Action Committee for Political Affairs
* League of Conservation Voters
* National Women's Political Caucus
* Natural Resources Defense Council
* Planned Parenthood Action Fund
* Population Connection Action Fund
* Progressive Change Campaign Committee
Labor unions
* Association of Flight Attendants
* United Farm Workers
Political parties
* Working Families Party

### Fundraising

Campaign finance reports as of June 30, 2024 :
| Candidate | Raised | Spent | Cash on hand |
| Elizabeth Warren (D) | $18,486,081 | $24,658,143 | $4,920,625 |
| Source: Federal Election Commission ||||

### Results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Elizabeth Warren (incumbent) | 562,709 | 98.58% |
| | Write-in | Write-in | 8,078 | 1.42% |
| Total votes | Total votes | Total votes | 570,787 | 100.0% |

## 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

* Chris Doughty, manufacturing executive and candidate for governor in 2022

### Endorsements

Governors
* Jane Swift, former Governor of Massachusetts (2001–2003)
Local Officials
* Thomas Koch, Mayor of Quincy (2008–present)
Executive Branch officials
* Anthony Scaramucci, former White House Director of Communications (2017)
Statewide officials
* Karyn Polito, former Lieutenant Governor of Massachusetts (2015–2023)
Individuals
* Mark Cuban, entrepreneur (Independent)
Organizations
* Massachusetts College Republicans

### Fundraising

Campaign finance reports as of June 30, 2024 :
| Candidate | Raised | Spent | Cash on hand |
| Robert Antonellis (R) | $43,352 | $37,250 | $9,667 |
| Ian Cain (R) | $361,115 | $312,722 | $48,393 |
| John Deaton (R) | $1,690,411 | $715,642 | $974,769 |
| Source: Federal Election Commission ||||

### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Robert Antonellis | Ian Cain | John Deaton | Other | Undecided |
| YouGov | May 17–30, 2024 | 292 (A) | ± 4.4% | 19% | 5% | 15% | 25% | 36% |
| Suffolk University | April 16–20, 2024 | 99(LV) | ± 4.4% | 4% | 2% | 4% | 1% | 89% |

### Results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | John Deaton | 136,773 | 64.51% |
| | Republican | Robert Antonellis | 54,940 | 25.91% |
| | Republican | Ian Cain | 19,374 | 9.14% |
| | Write-in | Write-in | 924 | 0.44% |
| Total votes | Total votes | Total votes | 212,011 | 100.0% |

## Workers Party primary
### Candidates
#### Withdrawn

* Brandon Griffin

## Libertarian primary
### Candidates
#### Declined

* Louis Marino, former Chelmsford town meeting representative

## General election
### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Solid D | November 9, 2023 |
| Inside Elections | Solid D | November 9, 2023 |
| Sabato's Crystal Ball | Safe D | November 9, 2023 |
| Decision Desk HQ/The Hill | Safe D | June 8, 2024 |
| Elections Daily | Safe D | May 4, 2023 |
| CNalysis | Solid D | November 21, 2023 |
| RealClearPolitics | Solid D | August 5, 2024 |
| Split Ticket | Safe D | October 23, 2024 |
| 538 | Solid D | October 23, 2024 |

### Post-primary endorsements

Statewide officials
* Bill Weld, former Governor of Massachusetts (1991–1997)
Notable Individuals
* Elon Musk, CEO of Tesla and SpaceX
* Mark Cuban, entrepreneur, Dallas Mavericks owner, philanthropist (Independent)
* Brad Garlinghouse, CEO of Ripple
* Chris Larsen, co-founder of Ripple (Democrat)
Newspapers
* Boston Herald
Organizations
* Log Cabin Republicans
* New England Police Benevolent Association nonprofit

### Polling

Aggregate polls
| Source of poll aggregation | Dates administered | Dates updated | Elizabeth Warren (D) | John Deaton (R) | Undecided | Margin |
| 538 | through November 2, 2024 | November 3, 2024 | 57.0% | 34.8% | 8.2% | Warren +22.2% |
| RealClearPolitics | September 12 - October 26, 2024 | November 3, 2024 | 56.5% | 34.3% | 9.2% | Warren +22.2% |
| 270toWin | October 8 - November 3, 2024 | November 3, 2024 | 57.5% | 34.8% | 7.7% | Warren +22.7% |
| TheHill/DDHQ | through November 2, 2024 | November 3, 2024 | 58.4% | 36.1% | 5.5% | Warren +22.3% |
| Average | Average | Average | 57.4% | 35.0% | 7.6% | Warren+22.4% |
| Poll source | Date(s) administered | Sample size | Margin of error | Elizabeth Warren (D) | John Deaton (R) | Other | Undecided |
| University of New Hampshire | October 29 – November 2, 2024 | 744 (LV) | ± 3.6% | 60% | 37% | – | 3% |
| MassINC Polling Group | October 29 – November 1, 2024 | 582 (LV) | ± 4.9% | 55% | 33% | 8% | 4% |
| ActiVote | October 2–30, 2024 | 400 (LV) | ± 4.9% | 63% | 37% | – | – |
| Emerson College | October 24–26, 2024 | 1,000 (LV) | ± 3.0% | 56% | 36% | 1% | 7% |
| UMass Amherst/YouGov/WCVB | October 3–10, 2024 | 700 (A) | ± 4.8% | 56% | 34% | 3% | 7% |
| Suffolk University | October 2–6, 2024 | 500 (LV) | ± 4.4% | 59% | 35% | – | 6% |
| Opinion Diagnostics (R) | September 19–21, 2024 | 638 (LV) | – | 53% | 32% | – | 15% |
| MassINC Polling Group | September 12–18, 2024 | 800 (LV) | ± 4.1% | 56% | 35% | 3% | 7% |
| University of New Hampshire | September 12–16, 2024 | 564 (LV) | ± 4.1% | 58% | 32% | 7% | 3% |
| YouGov | May 17–30, 2023 | 700 (A) | ± 4.4% | 47% | 24% | 8% | 21% |
Elizabeth Warren vs. Robert Antonellis
| Poll source | Date(s) administered | Sample size | Margin of error | Elizabeth Warren (D) | Robert Antonellis (R) | Other/Undecided |
| YouGov | May 17–30, 2023 | 700 (A) | ± 4.4% | 50% | 23% | 27% |
Elizabeth Warren vs. Charlie Baker
| Poll source | Date(s) administered | Sample size | Margin of error | Elizabeth Warren (D) | Charlie Baker (R) | Undecided |
| Fiscal Alliance Foundation | May 6–7, 2023 | 750 (LV) | ± 3.6% | 34% | 49% | 17% |
Elizabeth Warren vs. Ian Cain
| Poll source | Date(s) administered | Sample size | Margin of error | Elizabeth Warren (D) | Ian Cain (R) | Other/Undecided |
| YouGov | May 17–30, 2023 | 700 (A) | ± 4.4% | 48% | 24% | 28% |
Elizabeth Warren vs. Jonathan Kraft
| Poll source | Date(s) administered | Sample size | Margin of error | Elizabeth Warren (D) | Johnathan Kraft (R) | Undecided |
| Suffolk University | February 2–5, 2023 | 1000 (LV) | ± 3.1% | 56% | 33% | 11% |
Elizabeth Warren vs. Aaron Packard
| Poll source | Date(s) administered | Sample size | Margin of error | Elizabeth Warren (D) | Aaron Packard (R) | Other/Undecided |
| YouGov | May 17–30, 2023 | 700 (A) | ± 4.4% | 48% | 23% | 29% |
Elizabeth Warren vs. Karyn Polito
| Poll source | Date(s) administered | Sample size | Margin of error | Elizabeth Warren (D) | Karyn Polito (R) | Undecided |
| Fiscal Alliance Foundation | July 21–22, 2023 | 750 (LV) | ± 3.6% | 41% | 29% | 30% |

### Results

2024 United States Senate election in Massachusetts :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Elizabeth Warren (incumbent) | 2,041,668 | 59.81% | −0.53 |
| | Republican | John Deaton | 1,365,440 | 40.00% | +3.83 |
| | Write-in | Write-in | 6,221 | 0.18% | +0.08 |
| Total votes | Total votes | Total votes | 3,413,329 | 100.00% | N/A |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold | Democratic hold |
* Republican — >15%
* Republican — +12.5−15%
* Republican — +10−12.5%
* Republican — +7.5−10%
* Republican — +5−7.5%
* Republican — +2.5−5%
* Republican — +0−2.5%
* Democratic — +0−2.5%
* Democratic — +2.5−5%
* Democratic — +5−7.5%
* Democratic — +7.5-10%
* Democratic — +10−12.5%
* Democratic — +12.5−15%  Democratic—+>15%

#### Counties that flipped from Democratic to Republican

* Bristol (largest municipality: New Bedford)