2018 United States Senate election in Massachusetts
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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.[1]
November 6, 2018
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| Turnout | 59.17% | ||||||||||||||||
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Warren: 40–50% 50–60% 60–70% 70–80% 80–90% >90% Diehl: 40–50% 50–60% 60–70% Tie: 40–50% | |||||||||||||||||
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Warren won re-election, defeating her Republican opponent, state Representative Geoff Diehl.[2]
Democratic primary
Candidates
Nominated
- Elizabeth Warren, incumbent U.S. senator[3][4]
Results

| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Democratic | Elizabeth Warren (incumbent) | 590,835 | 98.08% | |
| Write-in | 11,558 | 1.92% | ||
| Total votes | 602,393 | 100.00% | ||
Republican primary
Candidates
Nominated
- Geoff Diehl, state representative[6]
Eliminated in primary
- John Kingston, attorney and founder and president of Better for America[7]
- Beth Lindstrom, former undersecretary of the Massachusetts Office of Consumer Affairs and Business Regulation[8]
Eliminated at convention
Declined
- Gabriel Gomez, businessman, former Navy SEAL and nominee for the U.S. Senate in 2013[11]
- Rick Green, businessman (running for House of Representatives) [12][13]
- Curt Schilling, former Major League Baseball pitcher[14]
- 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)[15]
- Daniel Winslow, former state representative and candidate for the U.S. Senate in 2013[16]
Endorsements
Governors
- William F. Weld, former governor of Massachusetts, 1991-1997[15]
State legislators
- Jay Barrows, state representative[17]
- Kimberly Ferguson, state representative[18]
- Paul Frost, state representative[19]
- Sheila Harrington, state representative[20]
- Bradford Hill, state representative[21]
- Steven Howitt, state representative[22]
- James Kelcourse, state representative[23]
- David Muradian, state representative[24]
- Elizabeth Poirier, state representative[25]
- Richard J. Ross, state senator[26]
- David Vieira, state representative[27]
- Donald Wong, state representative[28]
Local officials
Organizations
- Maggie's List[31]
- New England Police Benevolent Association[32]
- RightNOW Women PAC[33]
- Value in Electing Women (VIEW) PAC[34]
Newspapers
State legislators
- Donnie Berthiaume, state representative[37]
- Will Crocker, state representative[38]
- Vinny deMacedo, state senator[37]
- Ryan Fattman, state senator[37]
- Don Humason, state senator[37]
- Joseph D. McKenna, state representative[37]
Local officials
- Lew Evangelidis, Worcester County sheriff[37]
- Stephanie K. Fattman, Worcester County register of probate[37]
- Jim Kane, member of the Shrewsbury Board of Selectmen[39]
- Eddie Tedesco, Woburn city councilor[40]
Individuals
- Jim Rappaport, former chairman of the Massachusetts GOP[41]
Polling
Results
Overall

| 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 | 798 | 0.31% | ||
| 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
Independents
Candidates
Declared
- Shiva Ayyadurai, entrepreneur[44] and conspiracy theorist[45]
- John Devine[46]
- Allen Waters[47]
Declined
- Gabriel Gomez, businessman, former Navy SEAL and Republican nominee for the U.S. Senate in 2013[48]
General election
Endorsements
State officials
Newspapers
Organizations
- Council for a Livable World[51]
- Democracy for America[52]
- EMILY's List[53]
- End Citizens United[54]
- Feminist Majority Political Action Committee [55]
- J Street[56]
- League of Conservation Voters[57]
- LegitAction[58]
- MoveOn.org[59]
- Natural Resources Defense Council Action Fund[60]
- Population Connection[61]
- Sierra Club[62]
- United Automobile Workers[63]
U.S. executive branch officials
- Mike Pence, 48th vice president of the United States[64]
- Sean Spicer, former White House Press Secretary[65]
Governors
State legislators
- Nick Boldyga, state representative[68]
- Forrester Clark, former state representative[69]
- Leah Cole, former state representative[70]
- Robert Correia, former state representative (Democrat)[71]
- David DeCoste, state representative[72]
- Peter Durant, state representative[73]
- Marc Lombardo, state representative[74]
- Jim Lyons, state representative[75]
- Lenny Mirra, state representative[76]
- Shaunna O'Connell, state representative[77]
Local officials
- Caroline Colarusso, Stoneham selectwoman[78]
- John Coutinho, Hopkinton selectman[79]
- Jim Cummings, Barnstable County sheriff[80]
- Lewis Evangelidis, Worcester County sheriff[81]
- Bob Hedlund, Weymouth mayor[82]
- Tom Hodgson, Bristol County sheriff[83]
- Michael Marchese, Everett city councilor at-large[84]
- John McCaul, Taunton city councilor[85]
- Joe McDonald, Plymouth County sheriff[86]
- Monica Medeiros, Melrose alderman[87]
- Ken Mitchel, Hanson Board of Selectman chair[88]
- Jeff Postell, Taunton city councilor[85]
- Claire Wright, Hopkinton selectwoman[79]
Individuals
- Herman Cain, former presidential candidate[89]
- Howie Carr, radio talk host[90]
- David Constantine, former governor's councilor[91]
- Larry Ellison, president of the Massachusetts Association of Minority Law Enforcement Officers[92]
- Steve Grogan, retired New England Patriots player[93]
- Jeff Kuhner, hadio host
- Matt Light, retired New England Patriots player
- Joe Malone, former state treasurer[94]
- Dave Marciano, boat captain on Wicked Tuna[95]
- Frank McNamara, former U.S. attorney[96]
- Stephen Moore, writer and economist[97]
- Fred Smerlas, retired New England Patriots player[98]
Organizations
- Association of County Employees (the Union of Plymouth County Corrections Officers)[99]
- The Association of Marshfield Police[100]
- Boston Police Patrolmen’s Association[101][102]
- Everett Police Patrolman's Local 94[103]
- Everett Police Superior Officers Local 95[103]
- ICE Council Local 207[104]
- Massachusetts Police Association[105]
- Massachusetts Republican Party (MassGOP), Massachusetts branch of the United States Republican Party[106]
- New Bedford Police Union[100]
- New England Police Benevolent Association[107]
- Norfolk Sheriff's Office County Correctional Officers Association[93]
- NRA Political Victory Fund[108][109]
- Worcester's NEPBA Local 911[110]
- Youth Conservatives of Massachusetts[111]
Newspapers
Individuals
- Ben Garrison, political cartoonist and artist[114]
- Curt Schilling, former MLB pitcher[115]
- Owen Shroyer, political activist and commentator, host on InfoWars[116]
Newspapers
Debates
- Complete video of debate, October 19, 2018
- Complete video of debate, October 21, 2018
Predictions
| Source | Ranking | As of |
|---|---|---|
| The Cook Political Report[118] | Safe D | September 28, 2018 |
| Inside Elections[119] | Safe D | September 29, 2017 |
| Sabato's Crystal Ball[120] | Safe D | September 27, 2017 |
| Fox News[121] | Likely D | July 9, 2018 |
| CNN[122] | Safe D | July 12, 2018 |
| RealClearPolitics[123] | 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[124] | October 25–28, 2018 | 502 | ± 4.4% | 54% | 32% | 6% | 3% | 3% |
| Suffolk University[125] | October 24–28, 2018 | 500 | ± 4.4% | 56% | 34% | 4% | – | 5% |
| Western New England University[126] | October 10–27, 2018 | 402 LV | ± 5.0% | 57% | 27% | 7% | – | 8% |
| 485 RV | ± 4.0% | 54% | 27% | 6% | – | 12% | ||
| UMass Lowell[127] | October 1–7, 2018 | 485 LV | ± 5.6% | 56% | 31% | 8% | 3% | 2% |
| 791 RV | ± 4.4% | 56% | 28% | 9% | 4% | 1% | ||
| MassINC[128] | September 17–21, 2018 | 506 | ± 4.4% | 56% | 30% | 5% | 1% | 6% |
| Suffolk University[129] | September 13–17, 2018 | 500 | ± 4.4% | 54% | 24% | 6% | – | 16% |
| Suffolk University[130] | June 8–12, 2018 | 500 | ± 4.4% | 55% | 33% | – | – | 11% |
| MassINC[131] | May 22–26, 2018 | 501 | ± 4.4% | 54% | 19% | 8% | 1% | 15% |
| MassINC[132] | March 16–18, 2018 | 504 | ± 4.4% | 55% | 20% | 9% | 1% | 13% |
| MassINC[133] | November 9–12, 2017 | 503 | ± 4.4% | 58% | 32% | – | 3% | 7% |
| MassINC[134] | 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[130] | June 8–12, 2018 | 500 | ± 4.4% | 56% | 31% | – | – | 13% |
| MassINC[131] | May 22–26, 2018 | 501 | ± 4.4% | 55% | 19% | 7% | 2% | 15% |
| MassINC[132] | March 16–18, 2018 | 504 | ± 4.4% | 53% | 19% | 9% | 1% | 14% |
| MassINC[133] | 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[130] | June 8–12, 2018 | 500 | ± 4.4% | 54% | 30% | – | – | 15% |
| MassINC[131] | May 22–26, 2018 | 501 | ± 4.4% | 56% | 19% | 8% | 1% | 14% |
| MassINC[132] | March 16–18, 2018 | 504 | ± 4.4% | 53% | 19% | 7% | 2% | 12% |
| MassINC[133] | 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[135] | September 15–20, 2016 | ≈450 | ± 4.1% | 40% | 36% | – | – | 5% | 19% |
| 44% | – | 31% | – | 10% | 15% | ||||
| 39% | – | – | 32% | 3% | 26% |
with Shiva Ayyadurai running as Republican
with Curt Schilling
| Poll source | Date(s) administered |
Sample size |
Margin of error |
Elizabeth Warren (D) |
Curt Schilling (R) |
Other | Undecided |
|---|---|---|---|---|---|---|---|
| Suffolk University[136] | October 24–26, 2016 | 500 | ± 4.4% | 58% | 24% | 2% | 16% |
| UMass Amherst[135] | September 15–20, 2016 | ≈450 | ± 4.1% | 47% | 28% | 9% | 16% |
| MassINC[137] | 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[135] | September 15–20, 2016 | ≈450 | ± 4.1% | 40% | 37% | 8% | 16% |
Results
| 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 | 2,799 | 0.10% | N/A | ||
| Total votes | 2,707,090 | 100.00% | N/A | ||
| Democratic hold | |||||
By county
By county | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Counties that flipped from Republican to Democratic
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By congressional district
Warren won all of the state’s congressional districts.[139]
| District | Warren | Diehl | Representative |
|---|---|---|---|
| 1st | 59% | 37% | Richard Neal |
| 2nd | 57% | 39% | Jim McGovern |
| 3rd | 57% | 39% | Niki Tsongas (115th Congress) |
| Lori Trahan (116th Congress) | |||
| 4th | 58% | 38% | Joe Kennedy III |
| 5th | 69% | 28% | Katherine Clark |
| 6th | 55% | 41% | Seth Moulton |
| 7th | 84% | 13% | Michael Capuano (115th Congress) |
| Ayanna Pressley (116th Congress) | |||
| 8th | 58% | 39% | Stephen Lynch |
| 9th | 51% | 46% | Bill Keating |