For related races, see 2026 United States Senate elections.
Not to be confused with 2026 Maine State Senate election.

2026 United States Senate election in Maine
← 2020
November 3, 2026 (2026-11-03)
2032 →
 
Nominee Susan Collins
(presumptive)		 TBD
Party Republican Democratic
Incumbent U.S. senator

Susan Collins
Republican


The 2026 United States Senate election in Maine will be held on November 3, 2026, to elect a member of the United States Senate to represent the state of Maine. Incumbent Republican U.S. senator Susan Collins is running for re-election to a sixth term. This election will coincide with U.S. House elections, a gubernatorial election, and other local elections. The primary is scheduled to take place on June 9, 2026. Both the primary and general elections will be conducted with ranked-choice voting.[1]

This election is expected to be among the most competitive Senate races in 2026.[2] Collins is the only Republican senator who represents one of the 19 states that Donald Trump did not win in any of his three presidential campaigns.[3] This will be the only Republican-held Senate seat up for election in a state that Kamala Harris won in the 2024 presidential election.

Background

The northernmost state in New England, Maine is considered to be a moderately blue state, having voted for every Democratic presidential nominee since 1992, and voting for Kamala Harris by about seven percentage points in 2024. Democrats also control the governorship, the state legislature, and both seats in Maine's U.S. House congressional delegation.[4] After 2018,[a] Collins has been the only Republican representing any state in New England at the federal level, in either chamber of Congress.[5]

Collins was first elected in 1996, and was re-elected in four subsequent elections, significantly outperforming other Republicans in the state. In 2020, despite almost all polls and analysts predicting that she would lose her re-election bid, Collins unexpectedly defeated Democratic nominee Sara Gideon by a 9-point margin. Democratic presidential nominee Joe Biden carried Maine by about nine percentage points on the same ballot.[6]

As the only Republican-held Senate seat up for election in a state won by Kamala Harris in the 2024 presidential election, Maine is considered a key Senate battleground in 2026 despite Susan Collins' history of electoral overperformance. Republicans have held the seat since 1979—the last time a sitting U.S. senator from Maine lost reelection. No Democrat has won a Maine Senate race since 1988, or this seat since 1972.[b]

With the decline of ticket splitting and being in a midterm election with an unpopular Republican president, Collins is widely viewed as the most vulnerable incumbent Republican senator.[7][8] After 2024, Collins is the last senator to represent a non-swing state of the opposite party (a reliably red or blue state).[9]

Republican primary

Incumbent U.S. senator Susan Collins officially announced her reelection bid in February 2026.[10] Despite conservative backlash to her centrist voting record, the Republican Party has supported her reelection.[11] However, she faced a primary challenge from former police officer Dan Smeriglio, a critic of her bipartisan approach.[12][13] Ultimately, Collins was the only Republican to qualify for the primary ballot.[14]

Candidates

Presumptive nominee

  • Susan Collins, incumbent U.S. senator (1997–present)[10][15]

Withdrawn

  • Carmen Calabrese, restaurant owner[10][16]
  • Bill Clarke, entrepreneur and Constitution Party nominee for U.S. Senate in 1996 and for governor in 1998[17][18]
  • Dan Smeriglio, former police officer[19]

Endorsements

Susan Collins
U.S. senators
  • John Thune, Senate majority leader (2025–present) from South Dakota (2005–present)[20]
  • Steve Daines, Montana (2015–present)[21]
  • Joe Manchin, former West Virginia (2010–2025) (Independent)[22][c]
  • Tim Scott, South Carolina (2013–present)[23]
State legislators
  • Laurel Libby, state representative from the 20th district (2020–present)[24]
Organizations
  • AIPAC[25]
  • ClearPath Foundation[26]
  • Log Cabin Republicans[27]
  • National Republican Senatorial Committee[23]
  • Senate Leadership Fund[20]
Declined to endorse
Executive branch officials
  • Donald Trump, president of the United States (2017–2021, 2025–present)[28]

Fundraising

Campaign finance reports as of March 31, 2026
Candidate Raised Spent Cash on hand
Carmen Calabrese (R)[d] $17,760 $21,260 $0.00
Susan Collins (R) $13,223,555 $4,517,900 $10,000,848
Source: Federal Election Commission[29]

Polling

Poll source Date(s)
administered		 Sample
size[e]		 Margin
of error		 Carmen
Calabrese		 Susan
Collins		 Dan
Smeriglio		 Other Undecided
March 1, 2026 Calabrese withdraws
University of New Hampshire[30] February 12–16, 2026 417 (LV) ± 4.9% 1% 67% 6% 1%[f] 25%
University of New Hampshire[31] October 16–21, 2025 417 (LV) ± 4.8% 1% 66% 1% 4%[g] 27%

Democratic primary

Background

In April 2025, former congressional staffer Jordan Wood became the first Democrat to enter the race, running on a platform opposed to the Trump administration and Elon Musk.[32] On August 19, Sullivan Harbor Master Graham Platner launched a progressive campaign backed by Bernie Sanders and organized labor, positioning himself against the "Democratic establishment" and drawing support from both liberal voters and some 2024 Trump voters.[33][34]

Governor Janet Mills was widely viewed as a top Democratic recruit, with encouragement from national figures including Senate Minority Leader Chuck Schumer, Senator Kirsten Gillibrand, and the Democratic Senatorial Campaign Committee (DSCC),[35] though Sanders publicly discouraged her candidacy.[36] This primary was seen as a key contest between the Democratic Party's centrist establishment wing and the populist left-wing and progressive faction, with Mills representing the former and Platner representing the latter.[37] Following the end of Mills' campaign Platner was the most prominent and competitive Democrat left in the race, making him the most likely nominee.[38]

Campaign

After weeks of speculation and leaked campaign plans,[39] Mills entered the race in October 2025, pledging to serve only one term; her age, 79 at the start of the term, drew some scrutiny.[40] The DSCC's close involvement in her campaign, including a joint fundraising committee, prompted backlash and allegations of favoritism in the primary.[41][42]

Following her entry, several candidates, including Dan Kleban and Daira Smith-Rodriguez, withdrew and endorsed Mills.[43][44] Smith-Rodriguez cited concerns over past comments by Platner regarding sexual assault in the military.[45] Wood later withdrew to run for the U.S. House.[46]

In January 2026, Platner briefly paused his campaign due to his wife's medical treatment abroad[47] before resuming later that month, returning to the campaign trail with protests against Immigrations and Customs Enforcement (ICE) enforcement actions.[48]

In February 2026, Mills committed to multiple debates ahead of the June 9 primary.[49]

Mills, Platner, and 2024 nominee David Costello qualified for the primary ballot.[50] In addition, University of Maine adjunct professor Andrea LaFlamme is mounting a write-in bid for the Democratic nomination.[51]

Despite multiple controversies, polling has consistently shown Platner leading Mills in the primary and incumbent Senator Susan Collins in a potential general election matchup.[56] In March 2026, Mills began running attack ads highlighting Platner's controversies. By April 2026, multiple polls had been released, which showed Mills 38 points behind Platner in the primary.[57] Shortly thereafter, the Mills campaign had stopped running the attack ads and had made no additional ad purchases across any platform, leading to rumors that she would withdraw from the race.[58] The Mills campaign denied these rumors, saying that the campaign was "full steam ahead" and that Mills was the most electable candidate.[58] Axios reported on April 6 that the Platner campaign had told donors and supporters that they were pivoting their attention away from the primary and towards incumbent Susan Collins.[59]

On April 30, Mills announced that she was suspending her campaign. When asked if she would support Platner if he won the Democratic nomination, she stated "I've always been a Democrat. I always supported the Democratic candidate." Her withdrawal also led to Schumer and Gillibrand announcing they would now help Platner to defeat Susan Collins.[60]

Controversies

Shortly after Mills entered the race, Platner came under fire for resurfaced controversial Reddit posts, resulting in his campaign's political director, former state representative Genevieve McDonald, quitting the campaign and calling Platner "unelectable"; however, Democratic National Committee Chair Ken Martin stated that the comments were not disqualifying,[61] and Platner apologized in a five-minute video posted to social media. On October 21, Platner released a video of himself dancing and singing shirtless at his brother's wedding, revealing he had a chest tattoo that resembled the Totenkopf used by Nazi Germany's Schutzstaffel. Platner stated he got the tattoo while inebriated with other U.S. Marines while stationed in Croatia, mistaking the symbol for a generic skull and crossbones. He had the tattoo covered,[62] and professed his shame and disgust for getting a tattoo that resembled the fascist insignia.[63] Platner also called himself an anti-fascist "supersoldier" in an old Reddit comment.[64] After the controversies, Democrats such as Senator Chris Murphy defended Platner and said that he "sounds like a human being" who is honest about his mistakes[65][66][67] and Senator Gallego called his campaign "authentic" and said that he has "the right to grow out of his stupidity" and is not going to be a "crypto-Fetterman".[68][69]

On February 26, 2026, Platner quote-tweeted a clip from Donald Trump's 2026 State of the Union Address, criticizing Trump's speech. The clip had been posted by anti-Semitic white supremacist Stew Peters.[70] The tweet was deleted hours later, with a spokesperson for Platner's campaign telling The Hill that they were unaware of Peters' views.[71][72]

Candidates

Declared

  • David Costello, former deputy secretary of the Maryland Department of the Environment and nominee for U.S. Senate in 2024[73][15]
  • Andrea LaFlamme, adjunct professor at the University of Maine (write-in candidate)[51][74][75]
  • Graham Platner, Sullivan harbor master[76][15]

Withdrawn

  • Natasha Alcala, fashion designer[10]
  • David Evans, former Department of Defense policy writer[77]
  • Tucker Favreau, cybersecurity professional[78][79]
  • Janet Mills, governor of Maine (2019–present)[80]
  • Dan Kleban, brewery owner (endorsed Mills)[43]
  • Daira Smith-Rodriguez, former civilian contracting officer for the U.S. Air Force (endorsed Mills)[81]
  • Jordan Wood, former chief of staff to former U.S. Representative Katie Porter (running for U.S. House; endorsed Platner)[82][83]

Declined

  • Aaron Frey, Maine attorney general (2019–present) (endorsed Mills)[84][85]
  • Jared Golden, U.S. representative from Maine's 2nd congressional district (2019–present)[86][87]
  • Chellie Pingree, U.S. representative from Maine's 1st congressional district (2009–present) and nominee for U.S. Senate in 2002 (running for re-election)[88]

Endorsements

Graham Platner
Executive branch officials
  • Robert Reich, former U.S. secretary of labor (1993–1997)[89]
  • Nirav D. Shah, former principal deputy director of the Centers for Disease Control and Prevention (2023–2025) and 2026 gubernatorial candidate[90]
U.S. senators
  • Ruben Gallego, Arizona (2025–present)[91]
  • Kirsten Gillibrand, New York (2010–present) (previously endorsed Mills)[92][42][83]
  • Martin Heinrich, New Mexico (2013–present)[93]
  • Bernie Sanders, Vermont (2007–present) (Independent)[94]
  • Elizabeth Warren, Massachusetts (2013–present)[95]
  • Chuck Schumer, New York (1999–present) (previously endorsed Mills)[92][83]
U.S. representatives
  • Ro Khanna, CA-17 (2017–present)[96]
Statewide officials
  • Shenna Bellows, Maine secretary of state (2021–present) and 2026 gubernatorial candidate[97]
  • Matthew Dunlap, Maine state auditor (2021; 2022–present), former Maine secretary of state (2005–2011; 2013–2021), and 2026 candidate for ME-02[83]
  • Tim Walz, governor of Minnesota (2019–present)[98]
State legislators
  • Joe Baldacci state senator from the 9th district (2020–present) and 2026 candidate for ME-02[83]
  • Troy Jackson, former president of the Maine Senate (2018–2024) from the 35th district (2008–2014) and 1st district (2016–2024) and 2026 gubernatorial candidate[99]
  • Genevieve McDonald, former state representative from the 134th district (2018–2022)[h][100]
  • Aaron Regunberg, former state representative from Rhode Island's 4th district (2015–2019)[101]
  • Joanne Twomey, former state representative from the 19th district (1998–2004) and 135th district (2004–2006)[102]
  • 3 current state senators[i]
  • 16 current state representatives[j]
Local officials
  • Karen Heck, former mayor of Waterville (2012–2014) (Independent)[107]
  • Safiya Khalid, former Lewiston city councilor (2020–2022)[108]
  • Carl Sheline, mayor of Lewiston (2022–present)[103]
Party officials
  • David Hogg, former vice chair of the Democratic National Committee (2025)[109]
Individuals
  • Ken Casey, vocalist for the Dropkick Murphys[110]
  • Shawn Fain, president of the United Auto Workers[111]
  • John Hodgman, author[112]
  • Angus King III, businessman and 2026 gubernatorial candidate[83]
  • Josh Ritter, singer-songwriter[113]
  • Jordan Wood, 2026 candidate for ME-02 and former candidate for this seat[114][83]
Labor unions
  • AFL-CIO[115]
  • International Association of Machinists and Aerospace Workers[116]
  • International Federation of Professional and Technical Engineers[117]
  • Maine State Nurses Association[118]
  • National Nurses United[119]
  • United Auto Workers[111]
Organizations
  • College Democrats of America[109]
  • Democratic Senatorial Campaign Committee (previously endorsed Mills)[92]
  • Gen-Z for Change[109]
  • Maine People's Alliance[120]
  • Our Revolution[121]
  • Progressive Change Campaign Committee[122]
  • Progressive Victory[123]
  • Showing Up for Racial Justice[124]
  • Sierra Club[125]
  • Track AIPAC[126]
  • Voters of Tomorrow[109]
Political parties
  • Working Families Party[127]
Dan Kleban (withdrawn)
State legislators
  • Mattie Daughtry, president of the Maine Senate (2024–present) from the 23rd district (2020–present)[128]
Individuals
  • Lucas St. Clair, national board chair of the Trust for Public Land[128]
Janet Mills (withdrawn)
U.S. senators
  • Catherine Cortez Masto, Nevada (2017–present)[129]
  • Chuck Schumer, New York (1999–present)[130] (endorsed Platner after Mills withdrew)[131]
  • Kirsten Gillibrand, New York (2010–present) (endorsed Platner after Mills withdrew)[132]
U.S. representatives
  • Barney Frank, former MA-04 (1981–2013)[133]
Statewide officials
  • Andy Beshear, governor of Kentucky (2019–present)[134]
  • Aaron Frey, attorney general of Maine (2019–present)[135]
  • Michelle Lujan Grisham, governor of New Mexico (2019–present)[136]
  • Maura Healey, governor of Massachusetts (2023–present)[137]
  • Drew Ketterer, former attorney general of Maine (1995–2001)[138]
  • Steve Rowe, former attorney general of Maine (2001–2009)[138]
  • James E. Tierney, former attorney general of Maine (1981–1991)[138]
  • Gretchen Whitmer, governor of Michigan (2019–present)[134]
State legislators
  • Ben Allen, state senator from California's 24th district (2014–present)[139]
  • Lynn Bromley, former state senator from the 7th district (2000–2008)[140]
  • Emily Cain, former state senator from the 30th district (2012–2014)[141]
  • Margaret Craven, former state representative from the 59th district (2002–2008, 2018–2022) and 93rd district (2022–2024)[141]
  • Leila Percy, former state representative from the 64th district (2002–2010)[141]
  • Linda Sanborn, former state senator from the 30th district (2018–2020)[141]
  • Barbara Trafton, former state senator from the 12th district (1979–1982)[141]
  • Eloise Vitelli, former majority leader of the Maine Senate (2021–2024) from the 23rd district (2013–2014, 2016–2022) and 24th district (2022–2024)[141]
Individuals
  • Dan Kleban, brewery owner and former candidate for this seat[142]
  • Daira Smith-Rodriguez, former civilian contracting officer for the U.S. Air Force and former candidate for this seat[143]
Organizations
  • Democratic Senatorial Campaign Committee (endorsed Platner after Mills withdrew)[144]
  • Elect Democratic Women[145]
  • EMILYs List[146]
  • Planned Parenthood Action Fund[147]
  • Reproductive Freedom for All[148]
Jordan Wood (withdrawn)
U.S. representatives
  • Raul Ruiz, CA-36 (2013–2023), CA-25 (2023–present)[149]
  • Katie Porter, former CA-47 (2019–2025)[149]
Organizations
  • Vote Common Good[150]
  • Patriotic Millionaires[151]
Declined to endorse
U.S. senators
  • Angus King, Maine (2013–present) (Independent)[152]
Individuals
  • Jordan Wood, candidate for ME-02 in 2026 and former candidate for this seat[153] (endorsed Platner after Mills withdrew)[83]

Fundraising

Campaign finance reports as of March 31, 2026
Candidate Raised Spent Cash on hand
David Costello (D) $143,481 $96,333 $47,149
David Evans (D)[d] $6,437 $6,437 $0
Tucker Favreau (D)[d] $13,599.10 $4,913 $5,170
Dan Kleban (D)[d] $458,787 $458,367 $420
Andrea LaFlamme (D) $7,740 $1,929 $5,811
Janet Mills (D)[d] $5,359,823 $4,285,470 $1,074,353
Graham Platner (D) $11,956,530 $9,225,672 $2,730,858
Daira Smith-Rodriguez (D)[d] $242,582 $242,582 $0
Jordan Wood (D)[d] $3,098,912 $2,178,443 $920,470
Source: Federal Election Commission[29]

Polling

Aggregate polls

Source of poll
aggregation		 Dates
administered		 Dates
updated		 Janet
Mills		 Graham
Platner		 Other/Undecided
[k]		 Margin
270toWin[154] March 5–31, 2026 April 7, 2026 31.3% 53.0% 15.7% Platner +21.7%
Decision Desk HQ[155] through April 9, 2026 April 17, 2026 29.7% 59.4% 10.9% Platner +29.7%
Race to the WH[52] February 24 – April 9, 2026 April 17, 2026 29.8% 58.2% 12.0% Platner +28.4%
RealClearPolitics[53] February 12 – March 31, 2026 April 7, 2026 31.2% 53.8% 14.4% Platner +22.0%
Average 30.5% 56.1% 13.4% Platner +25.6%
Poll source Date(s)
administered		 Sample
size[e]		 Margin
of error		 David
Costello		 Janet
Mills		 Graham
Platner		 Jordan
Wood		 Other Undecided
April 30, 2026 Mills withdraws
Workbench Strategy (D)[156][A] April 6–9, 2026 600 (LV) – – 29% 64% – – 7%
Maine People's Resource Center (D)[157][B] March 20–31, 2026 514 (LV) – 2% 28% 61% – – 9%
Emerson College[158] March 21–23, 2026 530 (LV) ± 4.2% 1% 28% 55% – 4%[l] 13%
Impact Research (D)[159][C] March 19–23, 2026 500 (LV) – – 28% 66% – – 6%
Quantus Insights (R)[54] March 5, 2026 450 (LV) ± 3.4% – 38% 43% – – 19%
Pan Atlantic Research[55] February 13 – March 2, 2026 367 (LV) – 4% 39% 46% – – 11%
University of New Hampshire[30] February 12–16, 2026 462 (LV) ± 4.5% 1% 26% 64% – 3%[m] 6%
January 31, 2026 Favreau withdraws
Workbench Strategy (D)[160][A] December 11–16, 2025 500 (LV) – – 40% 55% – – 5%
Pan Atlantic Research[161] November 29 – December 7, 2025 318 (LV) – 1% 47% 37% – – 14%
Z to A Research (D)[162][D] November 14–18, 2025 845 (LV) ± 3.0% 0% 38% 58% – 2%[n] 2%
November 12, 2025 Wood withdraws
Maine People's Resource Center (D)[163][B] October 26–29, 2025 783 (V) ± 3.5% – 39% 41% 5% – 14%
– 47%[o] 53% – – –
SoCal Strategies[164] October 21–25, 2025 500 (LV) ± 4.4% 1% 41% 36% 2% – 20%
NRSC (R)[165] October 22–23, 2025 647 (LV) ± 3.5% – 25% 46% 3% – 26%
University of New Hampshire[31] October 16–21, 2025 510 (LV) ± 4.3% 1% 24% 58% 1% 1%[p] 14%

Independents

Candidates

Declared

  • Tim Rich, former restaurant owner[166]

Withdrawn

  • Phillip Rench, former member of the Maine Space Corporation Board of Directors (2023–2025)[167][168]

Fundraising

Campaign finance reports as of September 30, 2025
Candidate Raised Spent Cash on hand
Phillip Rench (I)[d] $55,313 $31,072 $24,241
Source: Federal Election Commission[29]

General election

Predictions

Source Ranking As of
Inside Elections[169] Tilt R March 25, 2026
The Cook Political Report[170] Tossup April 13, 2026
The Economist[171] Lean D (flip) April 21, 2026
Race To The WH[172] Tilt D (flip) April 21, 2026
Sabato's Crystal Ball[173] Tossup March 4, 2026

Polling

Susan Collins vs. Graham Platner

Aggregate polls

Source of poll
aggregation		 Dates
administered		 Dates
updated		 Susan
Collins (R)		 Graham
Platner (D)		 Other/Undecided Margin
Race to the WH[52] January 20 – April 9, 2026 April 21, 2026 41.7% 47.6% 10.7% Platner +5.9%
270toWin[154] March 21 – April 9, 2026 April 21, 2026 41.7% 49.0% 9.3% Platner +7.3%
Decision Desk HQ[174] through April 9, 2026 April 21, 2026 42.3% 48.6% 9.1% Platner +6.3%
RealClearPolitics[175] February 12 – March 31, 2026 April 7, 2026 40.0% 47.6% 12.2% Platner +7.6%
Average 41.4% 48.2% 10.4% Platner +6.8%
Poll source Date(s)
administered		 Sample
size[e]		 Margin
of error		 Susan
Collins (R)		 Graham
Platner (D)		 Other Undecided
Echelon Insights (R)[176][E] April 3–9, 2026 378 (LV) ± 6.3% 45% 51% – 6%
Maine People's Resource Center (D)[157][B] March 20–31, 2026 1,167 (LV) ± 2.9% 39% 48% – 13%
Emerson College[158] March 21–23, 2026 1,075 (LV) ± 2.9% 41% 48% 6%[q] 6%
OnMessage Public Strategies (R)[177][F] March 3–8, 2026 600 (LV) ± 4.0% 42% 44% – 14%
Quantus Insights (R)[54] March 5, 2026 800 (LV) ± 3.4% 42% 49% 4%[r] 6%
Pan Atlantic Research[55] February 13 – March 2, 2026 810 (LV) ± 3.7% 40% 44% – 16%
University of New Hampshire[30] February 12–16, 2026 1,105 (LV) ± 2.9% 38% 49% 4%[s] 9%
Fabrizio, Lee & Associates (R)[178][G] January 20–24, 2026 800 (LV) ± 3.5% 45% 44% – 11%
Workbench Strategy (D)[160][A] December 11–16, 2025 900 (LV) ±4.4% 50% 50% – –
Pan Atlantic Research[161] November 29 – December 7, 2025 820 (LV) ± 3.7% 42% 43% – 15%
Maine People's Resource Center[163][B] October 26–29, 2025 783 (LV) ± 3.5% 41% 45% – 14%
Zenith Research (D)[179][H] October 7–10, 2025 501 (LV) ± 4.4% 38% 38% 10%[t] 15%
Hypothetical polling
Susan Collins vs. Dan Kleban
Poll source Date(s)
administered		 Sample
size[e]		 Margin
of error		 Susan
Collins (R)		 Dan
Kleban (D)		 Undecided
Public Policy Polling (D)[180][I] September 8–9, 2025 642 (RV) – 35% 44% 21%
Susan Collins vs. Generic Democrat
Poll source Date(s)
administered		 Sample
size[e]		 Margin
of error		 Susan
Collins (R)		 Generic
Democrat		 Undecided
Cygnal (R)[181] November 10–11, 2025 600 (LV) ± 4.0% 41% 49% 11%

Susan Collins vs. Janet Mills

Poll source Date(s)
administered		 Sample
size[e]		 Margin
of error		 Susan
Collins (R)		 Janet
Mills (D)		 Other Undecided
Echelon Insights (R)[176][E] April 3–9, 2026 378 (LV) ± 6.3% 46% 48% – 6%
Maine People's Resource Center (D)[157][B] March 20–31, 2026 1,167 (LV) ± 2.9% 45% 42% – 9%
Emerson College[158] March 21–23, 2026 1,075 (LV) ± 2.9% 43% 46% 8%[u] 3%
OnMessage Public Strategies (R)[177][F] March 3–8, 2026 600 (LV) ± 4.0% 42% 42% – 16%
Quantus Insights (R)[54] March 5, 2026 800 (LV) ± 3.4% 45% 43% 7%[v] 6%
Pan Atlantic Research[55] February 13 – March 2, 2026 810 (LV) ± 3.7% 44% 44% – 12%
University of New Hampshire[30] February 12–16, 2026 1,105 (LV) ± 2.9% 40% 41% 9%[w] 10%
Fabrizio, Lee & Associates (R)[178][G] January 20–24, 2026 800 (LV) ± 3.5% 45% 44% – 11%
Workbench Strategy (D)[160][A] December 11–16, 2025 900 (LV) ±4.4% 51% 49% – –
Pan Atlantic Research[161] November 29 – December 7, 2025 820 (LV) ± 3.7% 43% 43% – 14%
Maine People's Resource Center[163][B] October 26–29, 2025 783 (LV) ± 3.5% 46% 42% – 14%
Zenith Research (D)[179][H] October 7–10, 2025 501 (LV) ± 4.4% 37% 42% 10%[t] 12%

Notes

  1. ^ When Bruce Poliquin lost his seat
  2. ^ Independent Senator Angus King, who has represented Maine in the Senate since 2013, has caucused with the Senate Democratic caucus for his tenure, but is not a registered member of the Democratic Party.
  3. ^ Held office as a Democrat until becoming an Independent in 2024
  4. ^ a b c d e f g h Withdrawn candidate
  5. ^ a b c d e f Key:
    A – all adults
    RV – registered voters
    LV – likely voters
    V – unclear
  6. ^ "Another candidate" with 1%
  7. ^ "Write in someone else" with 4%
  8. ^ Resigned as campaign political director and withdrew endorsement after controversy around old Reddit comments.
  9. ^
    • Pinny Beebe-Center, state senator from the 12th district (2022–present)[103]
    • Chip Curry, state senator from the 11th district (2020–present)[103]
    • Mike Tipping, state senator for the 8th district (2022–present)[104]
  10. ^
    • Mana Abdi, state representative from the 95th district (2022–present)[103]
    • Matthew Beck, state representative from the 122nd district (2024–present)[105]
    • Deqa Dhalac, state representative from the 120th district (2022–present)[103]
    • Janice Dodge, state representative from the 97th district (2018–present)[103]
    • Victoria Doudera, state representative from the 94th district (2018–2022) and 47th district (2022–present)[103]
    • Gary Friedmann, state representative from the 14th district (2024–present)[103]
    • Valli Geiger, state representative from the 93rd district (2020–2022) and the 42nd district (2022–present)[106]
    • Cheryl Golek, state representative from the 99th district (2022–present)[103]
    • Rafael Macias, state representative from the 51st district[103]
    • Nina Milliken, state representative from the 16th district (2022–present)[97]
    • Karen Montell, state representative from the 54th district (2022–present)[103]
    • Dylan Pugh, state representative from the 114th district (2024–present)[103]
    • Ambureen Rana, state representative from the 21st district (2022–present)[103]
    • Morgan Rielly, Maine House of Representatives from the 34th district (2020–2022) and 127th district (2022–present)[103]
    • Ellie Sato, state representative from the 109th district (2024–present)[103]
    • Kilton Webb, state representative from the 98th district (2024–present)[103]
  11. ^ Calculated by taking the difference of 100% and all other candidates combined.
  12. ^ LaFlamme and "Someone else" with 2%
  13. ^ LaFlamme with 2%; "Another candidate" with 1%; Evans and Favreau with 0%
  14. ^ Evans and LaFlamme with 1%; Favreau with 0%
  15. ^ With undecided and Wood votes re-allocated based on second-choice preference
  16. ^ "Write in someone else" with 1%; Evans, Favreau, and LaFlamme with 0%
  17. ^ "Someone else" with 6%
  18. ^ Someone else / Third party with 3%, would not vote with 1%
  19. ^ "Another candidate" with 4%
  20. ^ a b "Another candidate" with 9%; "Would not vote" with 1%
  21. ^ "Someone else" with 8%
  22. ^ Someone else / Third party with 6%, would not vote with 1%
  23. ^ "Another candidate" with 9%

Partisan client

  1. ^ a b c d Poll sponsored by Platner's campaign.[160]
  2. ^ a b c d e f Pollster affiliated with the Maine People's Alliance, which has endorsed Platner's campaign.[120]
  3. ^ Poll commissioned by gubernatorial candidate Troy Jackson, who has endorsed Platner's campaign.[99]
  4. ^ Poll sponsored by the Progressive Change Campaign Committee, which has endorsed Platner's campaign.
  5. ^ a b Poll commissioned by NetChoice
  6. ^ a b Poll sponsored by the Insurance Watchdog Coalition.
  7. ^ a b Poll sponsored by Pine Tree Results, a Collins-aligned Super PAC.
  8. ^ a b Poll sponsored by More Perfect Union, a progressive non-profit news media organization.
  9. ^ Poll sponsored by Kleban's campaign.

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