By FS Politics | 2024 U.S. Senate Primaries
The 2024 Massachusetts U.S. Senate Republican primary was held on September 3, 2024. John Deaton won the primary with 64.51% of the vote.
2024 Massachusetts U.S. Senate Republican Primary Results
John Deaton ✓
Percentage: 64.51%
Votes: 136,773
Robert J. Antonellis
Percentage: 25.91%
Votes: 54,940
Ian Cain
Percentage: 9.14%
Votes: 19,374
Write-In
Percentage: 0.44%
Votes: 924
Total votes: 212,011
Results by county
Barnstable County
John Deaton
Percentage: 66.25%
Votes: 9,837
Robert J. Antonellis
Percentage: 25.99%
Votes: 3,859
Ian Cain
Percentage: 7.37%
Votes: 1,094
Write-In
Percentage: 0.40%
Votes: 59
Total votes: 14,849
Berkshire County
John Deaton
Percentage: 71.14%
Votes: 1,610
Robert J. Antonellis
Percentage: 20.68%
Votes: 468
Ian Cain
Percentage: 7.82%
Votes: 177
Write-In
Percentage: 0.35%
Votes: 8
Total votes: 2,263
Bristol County
John Deaton
Percentage: 73.27%
Votes: 13,787
Robert J. Antonellis
Percentage: 19.41%
Votes: 3,653
Ian Cain
Percentage: 6.90%
Votes: 1,298
Write-In
Percentage: 0.42%
Votes: 79
Total votes: 18,817
Dukes County
John Deaton
Percentage: 71.18%
Votes: 289
Robert J. Antonellis
Percentage: 21.67%
Votes: 88
Ian Cain
Percentage: 6.40%
Votes: 26
Write-In
Percentage: 0.74%
Votes: 3
Total votes: 406
Essex County
John Deaton
Percentage: 61.45%
Votes: 14,965
Robert J. Antonellis
Percentage: 30.63%
Votes: 7,461
Ian Cain
Percentage: 7.55%
Votes: 1,838
Write-In
Percentage: 0.37%
Votes: 91
Total votes: 24,355
Franklin County
John Deaton
Percentage: 70.84%
Votes: 1,302
Robert J. Antonellis
Percentage: 23.18%
Votes: 426
Ian Cain
Percentage: 5.77%
Votes: 106
Write-In
Percentage: 0.22%
Votes: 4
Total votes: 1,838
Hampden County
John Deaton
Percentage: 73.98%
Votes: 9,500
Robert J. Antonellis
Percentage: 18.45%
Votes: 2,369
Ian Cain
Percentage: 7.11%
Votes: 913
Write-In
Percentage: 0.47%
Votes: 60
Total votes: 12,842
Hampshire County
John Deaton
Percentage: 78.64%
Votes: 3,140
Robert J. Antonellis
Percentage: 14.50%
Votes: 579
Ian Cain
Percentage: 6.19%
Votes: 247
Write-In
Percentage: 0.68%
Votes: 27
Total votes: 3,993
Middlesex County
John Deaton
Percentage: 59.05%
Votes: 23,880
Robert J. Antonellis
Percentage: 32.89%
Votes: 13,303
Ian Cain
Percentage: 7.54%
Votes: 3,050
Write-In
Percentage: 0.51%
Votes: 208
Total votes: 40,441
Nantucket County
John Deaton
Percentage: 61.69%
Votes: 161
Robert J. Antonellis
Percentage: 28.74%
Votes: 75
Ian Cain
Percentage: 8.81%
Votes: 23
Write-In
Percentage: 0.77%
Votes: 2
Total votes: 261
Norfolk County
John Deaton
Percentage: 59.71%
Votes: 15,174
Robert J. Antonellis
Percentage: 23.73%
Votes: 6,031
Ian Cain
Percentage: 16.18%
Votes: 4,112
Write-In
Percentage: 0.37%
Votes: 95
Total votes: 25,412
Plymouth County
John Deaton
Percentage: 66.78%
Votes: 19,001
Robert J. Antonellis
Percentage: 21.52%
Votes: 6,122
Ian Cain
Percentage: 11.37%
Votes: 3,235
Write-In
Percentage: 0.34%
Votes: 96
Total votes: 28,454
Suffolk County
John Deaton
Percentage: 52.12%
Votes: 3,951
Robert J. Antonellis
Percentage: 32.05%
Votes: 2,430
Ian Cain
Percentage: 15.01%
Votes: 1,138
Write-In
Percentage: 0.82%
Votes: 62
Total votes: 7,581
Worcester County
John Deaton
Percentage: 66.15%
Votes: 20,176
Robert J. Antonellis
Percentage: 26.48%
Votes: 8,076
Ian Cain
Percentage: 6.94%
Votes: 2,117
Write-In
Percentage: 0.43%
Votes: 130
Total votes: 30,499
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