# 2018 United States Senate election in Massachusetts

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U.S. Senate
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U.S. House
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Ballot measures
1980: Proposition 2½
2002: English Language Education in Public Schools
2006: 2008
Greyhound Protection
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2010: No Sales Tax for Alcohol
Sales Tax Relief
Comprehensive Permits and Regional Planning
2012: Right to Repair
Death with Dignity
Medical Marijuana
2014: Automatic Gas Tax Increase Repeal
Expansion of Bottle Deposits
Casino Repeal
Paid Sick Days
2016: Expand Slot Machine Gaming
Charter School Expansion
Farm Animal Confinement
Legalization, Regulation and Taxation of Marijuana
2018: Gender Identity Anti-Discrimination
2020: pending :
Boston
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Springfield
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Worcester
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Massachusetts portal :
vte :
The 2018 United States Senate election in Massachusetts took place on November 6, 2018. Incumbent Democratic U.S. senator Elizabeth Warren ran for re-election to a second term. The candidate filing deadline was June 5, 2018, and the primary election was held on September 4, 2018.
Warren won re-election, defeating her Republican opponent, state Representative Geoff Diehl.

## Democratic primary
### Candidates
#### Nominated

* Elizabeth Warren, incumbent U.S. senator

### Results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Elizabeth Warren (incumbent) | 590,835 | 98.08% |
| | Write-in | Write-in | 11,558 | 1.92% |
| Total votes | Total votes | Total votes | 602,393 | 100.00% |

## Republican primary
### Candidates
#### Nominated

* Geoff Diehl, state representative

#### Eliminated in primary

* John Kingston, attorney and founder and president of Better for America
* Beth Lindstrom, former Undersecretary of the Massachusetts Office of Consumer Affairs and Business Regulation

#### Eliminated at convention

* Darius Mitchell
* Heidi Wellman

#### Declined

* Gabriel Gomez, businessman, former Navy SEAL and nominee for the U.S. Senate in 2013
* Rick Green, businessman (running for House of Representatives)
* Curt Schilling, former Major League Baseball pitcher
* Bill Weld, former governor, nominee for the U.S. Senate in 1996 and Libertarian nominee for Vice President of the United States in 2016 (endorsed Beth Lindstrom)
* Daniel Winslow, former state representative and candidate for the U.S. Senate in 2013

### Endorsements

Governors
* William F. Weld, former governor of Massachusetts, 1991-1997
State legislators
* Jay Barrows, state representative
* Kimberly Ferguson, state representative
* Paul Frost, state representative
* Sheila Harrington, state representative
* Bradford Hill, state representative
* Steven Howitt, state representative
* James Kelcourse, state representative
* David Muradian, state representative
* Elizabeth Poirier, state representative
* Richard J. Ross, state senator
* Donald Wong, state representative
* David Vieira, state representative
Local officials
* Mark Hawke, Gardner Mayor
* Anne Manning-Martin, Peabody City Councilor-at-Large
Organizations
* Maggie's List
* New England Police Benevolent Association
* RightNOW Women PAC
* Value in Electing Women (VIEW) PAC
Newspapers
* The Boston Globe
* The Lowell Sun
State legislators
* Donnie Berthiaume, state representative
* Will Crocker, state representative
* Vinny deMacedo, state senator
* Ryan Fattman, state senator
* Don Humason, state senator
* Joseph D. McKenna, state representative
Local officials
* Lew Evangelidis, Worcester County Sheriff
* Stephanie K. Fattman, Worcester County Register of Probate
* Jim Kane, member of the Shrewsbury Board of Selectmen
* Eddie Tedesco, Woburn City Councilor
Individuals
* Jim Rappaport, former chairman of the Massachusetts GOP

### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Geoff Diehl | John Kingston | Beth Lindstrom | Other | Undecided |
| MassINC | June 22–25, 2018 | 399 | ± 4.9% | 26% | 12% | 15% | 5% | 41% |

### Results
#### Overall

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Geoff Diehl | 144,043 | 55.15% |
| | Republican | John Kingston | 69,636 | 26.66% |
| | Republican | Beth Lindstrom | 46,693 | 17.88% |
| | Write-in | Write-in | 798 | 0.31% |
| Total votes | Total votes | Total votes | 261,170 | 100.00% |

#### By county

Results by county. Red represents counties won by Diehl. Teal represents counties won by Kingston.
| County | Diehl % | Diehl votes | Kingston % | Kingston votes | Lindstrom % | Lindstrom votes |
| Barnstable | 57.0% | 10,761 | 24.2% | 4,573 | 18.6% | 3,513 |
| Berkshire | 47.9% | 1,221 | 37.8% | 965 | 13.8% | 352 |
| Bristol | 61.8% | 11,005 | 23.0% | 4,095 | 15.0% | 2,669 |
| Dukes | 55.2% | 347 | 25.9% | 163 | 18.9% | 119 |
| Essex | 53.1% | 17,716 | 28.3% | 9,428 | 18.3% | 6,104 |
| Franklin | 41.8% | 938 | 42.3% | 949 | 15.3% | 343 |
| Hampden | 50.5% | 7,491 | 34.0% | 5,048 | 15.0% | 2,225 |
| Hampshire | 45.7% | 1,967 | 36.7% | 1,579 | 16.9% | 725 |
| Middlesex | 52.5% | 29,084 | 26.8% | 14,852 | 20.3% | 11,218 |
| Nantucket | 50.1% | 168 | 29.6% | 99 | 20.3% | 68 |
| Norfolk | 58.9% | 18,749 | 22.0% | 7,009 | 18.8% | 5,992 |
| Plymouth | 70.1% | 23,242 | 19.8% | 6,549 | 10.0% | 3,316 |
| Suffolk | 53.5% | 4,792 | 27.6% | 2,471 | 18.2% | 1,628 |
| Worcester | 44.8% | 16,562 | 32.1% | 11,856 | 22.8% | 8,421 |
| Total | 55.2% | 144,043 | 26.7% | 69,636 | 17.9% | 46,693 |

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

* Bill Weld, former Republican governor and nominee for Vice President of the United States in 2016

## Independents
### Candidates
#### Declared

* Shiva Ayyadurai, entrepreneur and conspiracy theorist
* John Devine
* Allen Waters

#### Declined

* Gabriel Gomez, businessman, former Navy SEAL and Republican nominee for the U.S. Senate in 2013

## General election
### Endorsements

State officials
* Eric Schneiderman, former attorney general of New York
Newspapers
* Boston Globe
Organizations
* Council for a Livable World
* Democracy for America
* EMILY's List
* End Citizens United
* Feminist Majority Political Action Committee
* J Street
* League of Conservation Voters
* LegitAction
* MoveOn.org
* Natural Resources Defense Council Action Fund
* Population Connection
* Sierra Club
* United Automobile Workers
U.S. Executive Branch officials
* Mike Pence, 48th Vice President of the United States
* Sean Spicer, former White House Press Secretary
Governors
* Charlie Baker, Massachusetts
* Paul LePage, Maine
State legislators
* Nick Boldyga, state representative
* Forrester Clark, former state representative
* Leah Cole, former state representative
* Robert Correia, former state representative (Democrat)
* David DeCoste, state representative
* Peter Durant, state representative
* Marc Lombardo, state representative
* Jim Lyons, state representative
* Lenny Mirra, state representative
* Shaunna O'Connell, state representative
Local officials
* Caroline Colarusso, Stoneham Selectwoman
* John Coutinho, Hopkinton Selectmen
* Jim Cummings, Barnstable County Sheriff
* Lewis Evangelidis, Worcester County Sheriff
* Bob Hedlund, Weymouth Mayor
* Tom Hodgson, Bristol County Sheriff
* Michael Marchese, Everett City Councilor at Large
* John McCaul, Taunton City Councilor
* Joe McDonald, Plymouth County Sheriff
* Monica Medeiros, Melrose Alderman
* Ken Mitchel, Hanson Board of Selectman Chair
* Jeff Postell, Taunton City Councilor
* Claire Wright. Hopkinton Selectwoman
Individuals
* Herman Cain, former presidential candidate
* Howie Carr, radio talk host
* David Constantine, former Governor's Councilor
* Larry Ellison, president of the Massachusetts Association of Minority Law Enforcement Officers
* Steve Grogan, retired New England Patriots player
* Jeff Kuhner, hadio Host
* Matt Light, retired New England Patriots player
* Joe Malone, former state treasurer
* Dave Marciano, boat captain on Wicked Tuna
* Frank McNamara, former U.S. Attorney
* Stephen Moore, writer and economist
* Fred Smerlas, retired New England Patriots player
Organizations
* Association of County Employees (the Union of Plymouth County Corrections Officers)
* The Association of Marshfield Police
* Boston Police Patrolmen’s Association
* Everett Police Patrolman's Local 94
* Everett Police Superior Officers Local 95
* ICE Council Local 207
* Massachusetts Police Association
* Massachusetts Republican Party (MassGOP), Massachusetts branch of the United States Republican Party
* New Bedford Police Union
* New England Police Benevolent Association
* Norfolk Sheriff's Office County Correctional Officers Association
* NRA Political Victory Fund
* Worcester's NEPBA Local 911
* Youth Conservatives of Massachusetts
Newspapers
* Boston Herald
Individuals
* Ben Garrison, political cartoonist and artist
* Curt Schilling, former MLB pitcher
* Owen Shroyer, political activist and commentator, host on InfoWars
Newspapers
* The Lowell Sun

### Debates

* Complete video of debate, October 19, 2018
* Complete video of debate, October 21, 2018

### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe D | September 28, 2018 |
| Inside Elections | Safe D | September 29, 2017 |
| Sabato's Crystal Ball | Safe D | September 27, 2017 |
| Fox News | Likely D | July 9, 2018 |
| CNN | Safe D | July 12, 2018 |
| RealClearPolitics | Safe D | May 26, 2018 |
^Highest rating they assert

### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Elizabeth Warren (D) | Geoff Diehl (R) | Shiva Ayyadurai (I) | Other | Undecided |
| MassINC | October 25–28, 2018 | 502 | ± 4.4% | 54% | 32% | 6% | 3% | 3% |
| Suffolk University | October 24–28, 2018 | 500 | ± 4.4% | 56% | 34% | 4% | – | 5% |
| Western New England University | October 10–27, 2018 | 402 LV | ± 5.0% | 57% | 27% | 7% | – | 8% |
| Western New England University | October 10–27, 2018 | 485 RV | ± 4.0% | 54% | 27% | 6% | – | 12% |
| UMass Lowell | October 1–7, 2018 | 485 LV | ± 5.6% | 56% | 31% | 8% | 3% | 2% |
| UMass Lowell | October 1–7, 2018 | 791 RV | ± 4.4% | 56% | 28% | 9% | 4% | 1% |
| MassINC | September 17–21, 2018 | 506 | ± 4.4% | 56% | 30% | 5% | 1% | 6% |
| Suffolk University | September 13–17, 2018 | 500 | ± 4.4% | 54% | 24% | 6% | – | 16% |
| Suffolk University | June 8–12, 2018 | 500 | ± 4.4% | 55% | 33% | – | – | 11% |
| MassINC | May 22–26, 2018 | 501 | ± 4.4% | 54% | 19% | 8% | 1% | 15% |
| MassINC | March 16–18, 2018 | 504 | ± 4.4% | 55% | 20% | 9% | 1% | 13% |
| MassINC | November 9–12, 2017 | 503 | ± 4.4% | 58% | 32% | – | 3% | 7% |
| MassINC | June 19–22, 2017 | 504 | ± 4.4% | 60% | 29% | – | 1% | 8% |
with Beth Lindstrom
| Poll source | Date(s) administered | Sample size | Margin of error | Elizabeth Warren (D) | Beth Lindstrom (R) | Shiva Ayyadurai (I) | Other | Undecided |
| Suffolk University | June 8–12, 2018 | 500 | ± 4.4% | 56% | 31% | – | – | 13% |
| MassINC | May 22–26, 2018 | 501 | ± 4.4% | 55% | 19% | 7% | 2% | 15% |
| MassINC | March 16–18, 2018 | 504 | ± 4.4% | 53% | 19% | 9% | 1% | 14% |
| MassINC | November 9–12, 2017 | 504 | ± 4.4% | 56% | 33% | – | 3% | 8% |
with John Kingston
| Poll source | Date(s) administered | Sample size | Margin of error | Elizabeth Warren (D) | John Kingston (R) | Shiva Ayyadurai (I) | Other | Undecided |
| Suffolk University | June 8–12, 2018 | 500 | ± 4.4% | 54% | 30% | – | – | 15% |
| MassINC | May 22–26, 2018 | 501 | ± 4.4% | 56% | 19% | 8% | 1% | 14% |
| MassINC | March 16–18, 2018 | 504 | ± 4.4% | 53% | 19% | 7% | 2% | 12% |
| MassINC | November 9–12, 2017 | 504 | ± 4.4% | 57% | 33% | – | 2% | 7% |
| Poll source | Date(s) administered | Sample size | Margin of error | Elizabeth Warren (D) | Karyn Polito (R) | Mitt Romney (R) | Richard Tisei (R) | Other | Undecided |
| UMass Amherst | September 15–20, 2016 | ≈450 | ± 4.1% | 40% | 36% | – | – | 5% | 19% |
| UMass Amherst | September 15–20, 2016 | ≈450 | ± 4.1% | 44% | – | 31% | – | 10% | 15% |
| UMass Amherst | September 15–20, 2016 | ≈450 | ± 4.1% | 39% | – | – | 32% | 3% | 26% |
with Shiva Ayyadurai running as Republican
| Poll source | Date(s) administered | Sample size | Margin of error | Elizabeth Warren (D) | Shiva Ayyadurai (R) | Other | Undecided |
| MassINC | November 9–12, 2017 | 504 | ± 4.4% | 58% | 27% | 4% | 10% |
| MassINC | June 19–22, 2017 | 504 | ± 4.4% | 61% | 25% | 2% | 9% |
with Curt Schilling
| Poll source | Date(s) administered | Sample size | Margin of error | Elizabeth Warren (D) | Curt Schilling (R) | Other | Undecided |
| Suffolk University | October 24–26, 2016 | 500 | ± 4.4% | 58% | 24% | 2% | 16% |
| UMass Amherst | September 15–20, 2016 | ≈450 | ± 4.1% | 47% | 28% | 9% | 16% |
| MassINC | September 7–10, 2016 | 506 | ± 4.4% | 54% | 29% | 3% | 15% |
with William Weld
| Poll source | Date(s) administered | Sample size | Margin of error | Elizabeth Warren (D) | William Weld (L) | Other | Undecided |
| UMass Amherst | September 15–20, 2016 | ≈450 | ± 4.1% | 40% | 37% | 8% | 16% |

### Results

United States Senate election in Massachusetts, 2018 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Elizabeth Warren (incumbent) | 1,633,371 | 60.34% | +6.60% |
| | Republican | Geoff Diehl | 979,210 | 36.17% | −10.02% |
| | Independent | Shiva Ayyadurai | 91,710 | 3.39% | N/A |
| | Write-in | Write-in | 2,799 | 0.10% | N/A |
| Total votes | Total votes | Total votes | 2,707,090 | 100.00% | N/A |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Counties that flipped from Republican to Democratic

* Barnstable (largest municipality: Barnstable)
* Essex (largest municipality: Lynn)
* Norfolk (largest municipality: Quincy)
* Worcester (largest municipality: Worcester)

#### By congressional district

Warren won all of the state’s congressional districts.
| District | Diehl | Warren | Representative |
| 1st | 37.34% | 58.95% | Richard Neal |
| 2nd | 39.07% | 57.01% | Jim McGovern |
| 3rd | 38.56% | 57.51% | Niki Tsongas (115th Congress) |
| 3rd | 38.56% | 57.51% | Lori Trahan (116th Congress) |
| 4th | 38.45% | 58.19% | Joe Kennedy III |
| 5th | 27.82% | 68.91% | Katherine Clark |
| 6th | 41.21% | 54.98% | Seth Moulton |
| 7th | 13.15% | 84.51% | Michael Capuano (115th Congress) |
| 7th | 13.15% | 84.51% | Ayanna Pressley (116th Congress) |
| 8th | 39.45% | 57.65% | Stephen Lynch |
| 9th | 45.67% | 51.13% | Bill Keating |