Maine U.S. Senate 2026 Tracking Dashboard

Multi-Pollster Compilation — October 2025 through February 2026 — Last Updated: March 6, 2026

Ballot Tests (Latest)

Generic Ballot
D +9.8
1892, Feb 27 • 38.9% R / 48.7% D
Collins vs. Mills
D +2.3
1892, Feb 27 • 44.0% Collins / 46.3% Mills
Collins vs. Platner
D +6.8
1892, Feb 27 • 42.0% Collins / 48.8% Platner
Generic Ballot
D +1
Axis, Feb 5 • 44% R / 45% D
Collins vs. Mills
R +5
Axis, Feb 5 • 50% Collins / 45% Mills
Collins vs. Platner
R +5
Axis, Feb 5 • 49% Collins / 44% Platner

Democratic Primary (Latest)

1892, Feb 27
Platner 53.2%
Mills 19.5% • Undecided 25.2%
Axis, Feb 5
Platner 47%
Mills 42% • Undecided 8%
co/efficient, Nov 10
Platner 36.9%
Mills 31.5% • Undecided 22.5%

Candidate Favorability (Latest)

Collins Net Fav (1892, Feb 27)
−20.7
37.1% fav / 57.8% unfav
Mills Net Fav (1892, Feb 27)
−11.1
41.2% fav / 52.3% unfav
Platner Net Fav (1892, Feb 27)
+18.5
44.8% fav / 26.3% unfav
Trump Net Approval (Axis, Feb 5)
−10
44% approve / 54% disapprove
Trump Net Fav (1892, Feb 27)
−17.6
39.7% fav / 57.3% unfav

Collins Perceptions (Latest)

Collins Job Approval (1892, Feb 27)
−17.2
39.3% approve / 56.5% disapprove
Collins: Independent vs. Trump (1892, Feb 27)
49% Trump / 41% Independent
Axis Feb 5: 40% Trump / 41% Independent
Pollster:co/efficient
Wave 1:Oct 15-17, 2025 (n=1,036, MoE ±3.23%)
Wave 2:Nov 6-10, 2025 (n=1,700)
Mode:Mobile Text Responses & Live Interviews
Population:Likely General Election Voters

Trump Job Approval

ResponseOct 2025Nov 2025
Approve44.8%42.0%
Disapprove52.4%54.4%
Unsure2.7%3.5%
Net Approve-7.6-12.4

Candidate Favorability

Susan Collins

ResponseOct 2025Nov 2025
Favorable25.2%28.5%
Unfavorable58.0%57.3%
Unsure16.9%14.2%
Never Heard0.0%0.0%
Net Fav-32.8-28.8

Janet Mills

ResponseOct 2025Nov 2025
Favorable33.2%33.8%
Unfavorable55.6%55.0%
Unsure11.2%11.2%
Never Heard0.0%0.1%
Net Fav-22.4-21.2

Graham Platner

ResponseOct 2025Nov 2025
Favorable37.2%30.4%
Unfavorable13.8%30.8%
Unsure28.5%27.6%
Never Heard20.5%11.2%
Net Fav+23.4-0.4

Ballot Tests

Methodological Note: co/efficient ballot tests included a "Someone else" option not present in Axis or 1892 surveys. This distributes vote share differently and inflates the Other/Undecided column, but the margin between named candidates remains comparable.

Generic Senate Ballot

ResponseOct 2025Nov 2025
The Democrat47.7%48.5%
The Republican41.8%42.2%
Undecided10.5%9.4%
MarginD +5.9D +6.3

Collins vs. Mills

ResponseOct 2025Nov 2025
Susan Collins, R31.7%34.1%
Janet Mills, D30.0%32.2%
Someone else31.6%28.4%
Undecided6.7%5.3%
MarginR +1.7R +1.9

Collins vs. Platner

ResponseOct 2025Nov 2025
Graham Platner, D45.0%41.3%
Susan Collins, R32.1%34.7%
Someone else13.3%16.1%
Undecided9.7%8.0%
MarginD +12.9D +6.6

Democratic Primary Ballot (Dem Primary Voters Only)

ResponseNov 2025
Graham Platner36.9%
Janet Mills31.5%
Jordan Wood2.0%
David Costello1.4%
Someone else5.6%
Undecided22.5%

Democratic primary ballot not asked in October wave.

Collins Seen/Read/Heard

ResponseOct 2025Nov 2025
Have you seen, read, or heard anything about Susan Collins recently?
Yes82.7%80.5%
No14.9%16.5%
Unsure2.4%3.1%
SRH ImpactOct 2025Nov 2025
More Favorable10.4%12.4%
Less Favorable44.9%32.9%
No Impact44.0%47.3%
Have not heard0.7%7.5%
Net SRH Impact-34.5-20.5
SRH Open-Ended ThemesOct 2025Nov 2025
Trump Alignment37.1%32.9%
Voting Record28.8%26.3%
Character/Integrity24.2%21.5%
Support Maine20.2%24.4%

Multiple themes per response possible; percentages may exceed 100%.

Message Testing Statements

StatementOct 2025Nov 2025
AgreeDisagreeAgreeDisagree
"Collins has protected pensions..."32.5%24.0%40.2%18.7%
"Collins has secured healthcare funds..."28.6%26.6%38.7%20.3%
"Mills thanked Collins..."18.0%33.2%40.2%22.4%

Candidate Ideology

Susan CollinsOct 2025Nov 2025
Very Conservative20.1%20.3%
Somewhat Conservative32.4%34.1%
Moderate23.1%25.1%
Somewhat Liberal9.7%7.9%
Very Liberal3.2%3.2%
Unsure11.5%9.4%
Janet MillsOct 2025Nov 2025
Very Conservative0.2%1.1%
Somewhat Conservative2.7%4.4%
Moderate17.1%20.3%
Somewhat Liberal24.8%22.9%
Very Liberal48.8%46.7%
Unsure6.5%4.6%
Graham PlatnerOct 2025Nov 2025
Very Conservative0.1%0.9%
Somewhat Conservative1.6%1.4%
Moderate8.9%8.6%
Somewhat Liberal19.1%17.0%
Very Liberal24.8%34.1%
Unsure45.5%37.9%

Trump Affinity

ResponseOct 2025Nov 2025
I support him and his policies36.7%37.0%
I dislike him personally but support most of his policies9.7%8.6%
I dislike him and don't support most of his policies52.2%53.9%
Unsure1.4%0.5%

Government Shutdown (October Only)

ResponseOct 2025
Keeping the government open is too important; reopen42.8%
Government should stay shut down until certain goals are achieved40.9%
Unsure16.3%
Pollster:Axis Research
Study:One Nation ME Statewide III (AX26066)
Wave 3 Dates:Feb 3-5, 2026
Sample:n=523 Likely GE Voters
MoE:±4.37%
Mode:Live Telephone Interview

Direction of Country & State

Country DirectionNov 2025Jan 2026Feb 2026
Right Direction32%37%36%
Wrong Track63%58%60%
Don't Know4%5%4%
Maine DirectionNov 2025Jan 2026Feb 2026
Right Direction35%32%28%
Wrong Track57%60%62%
Don't Know8%8%10%

Job Approval

Donald Trump Job Approval

ResponseNov 2025Jan 2026Feb 2026
Total Approve41%43%44%
Total Disapprove58%56%54%
Strongly Approve30%31%30%
Somewhat Approve11%12%14%
Somewhat Disapprove3%5%3%
Strongly Disapprove55%51%51%
Net Approve-17-13-10

Janet Mills Job Approval (Governor)

ResponseNov 2025Jan 2026Feb 2026
Total Approve49%46%46%
Total Disapprove48%52%52%
Strongly Approve25%17%20%
Somewhat Approve25%29%25%
Somewhat Disapprove9%8%9%
Strongly Disapprove39%44%43%
Net Approve+1-6-6

Susan Collins Job Approval (U.S. Senator)

ResponseNov 2025Jan 2026Feb 2026
Total Approve42%41%43%
Total Disapprove54%55%53%
Strongly Approve16%11%12%
Somewhat Approve26%30%31%
Somewhat Disapprove15%17%19%
Strongly Disapprove39%38%34%
Net Approve-12-14-10

Candidate Favorability

Donald Trump

ResponseNov 2025Jan 2026Feb 2026
Total Favorable40%43%44%
Total Unfavorable58%56%56%
Very Favorable29%30%29%
Somewhat Favorable12%14%14%
Somewhat Unfavorable2%4%3%
Very Unfavorable56%52%52%

Susan Collins

ResponseNov 2025Jan 2026Feb 2026
Total Favorable45%43%41%
Total Unfavorable51%53%55%
Very Favorable17%13%14%
Somewhat Favorable27%30%27%
Somewhat Unfavorable15%19%22%
Very Unfavorable36%34%33%

Janet Mills

ResponseNov 2025Jan 2026Feb 2026
Total Favorable49%45%46%
Total Unfavorable47%54%52%
Very Favorable22%14%18%
Somewhat Favorable27%31%28%
Somewhat Unfavorable10%11%10%
Very Unfavorable38%43%41%

Graham Platner

ResponseNov 2025Jan 2026Feb 2026
Total Favorable33%37%37%
Total Unfavorable26%23%26%
Very Favorable17%15%17%
Somewhat Favorable16%22%21%
Somewhat Unfavorable9%8%8%
Very Unfavorable17%15%18%
No Opinion20%20%16%
Never Heard22%19%21%

Ballot Tests

Generic Senate Ballot

ResponseNov 2025Jan 2026Feb 2026
The Republican candidate37%41%44%
The Democratic candidate47%47%45%
Don't Know / Undecided15%11%10%
MarginD +10D +6D +1

Collins vs. Mills (with lean)

ResponseNov 2025Jan 2026Feb 2026
Total Collins45%48%50%
Total Mills49%47%45%
Definitely Collins36%41%39%
Probably Collins7%5%8%
Lean Collins2%2%2%
Definitely Mills37%35%36%
Probably Mills9%8%6%
Lean Mills3%4%3%
Hard Undecided5%4%5%
MarginD +4R +1R +5

Collins vs. Platner (with lean)

ResponseNov 2025Jan 2026Feb 2026
Total Collins44%49%49%
Total Platner45%45%44%
Definitely Collins32%38%35%
Probably Collins8%7%12%
Lean Collins4%4%2%
Definitely Platner34%34%36%
Probably Platner8%7%6%
Lean Platner4%3%3%
Hard Undecided9%6%7%
MarginD +1R +4R +5

Democratic Primary Ballot (Dem/Dem-leaning voters)

ResponseNov 2025Jan 2026Feb 2026
Graham Platner50%55%47%
Janet Mills33%31%42%
David Costello2%2%2%
Other1%1%1%
Hard Undecided12%11%8%

Most Important Issue

IssueNov 2025Jan 2026Feb 2026
Protecting democracy23%21%25%
Inflation and cost of living13%11%9%
Immigration and border security9%9%16%
Jobs and the economy9%8%3%
Healthcare8%14%8%
Social Security and Medicare8%6%5%
Government spending and the debt6%5%4%
All (vol.)6%8%18%
Taxes5%6%3%
National Security3%4%2%
Education3%1%1%
Abortion2%1%1%
Crime and drugs1%2%1%

Collins Perceptions

Collins: Independent Voice vs. Trump Supporter

ResponseNov 2025Jan 2026Feb 2026
Mostly an independent voice for Maine39%42%41%
Mostly a supporter of Donald Trump47%46%40%
Both (vol.)3%2%6%
Neither (vol.)4%3%8%
Don't Know7%7%5%

Collins Ideology

ResponseNov 2025Jan 2026Feb 2026
Total Conservative56%55%54%
Total Liberal7%9%10%
Very Conservative23%21%20%
Somewhat Conservative33%35%34%
Moderate30%29%28%
Somewhat Liberal4%6%2%
Very Liberal2%3%7%

Collins Effectiveness

ResponseNov 2025Jan 2026Feb 2026
Total Effective62%58%63%
Total Ineffective35%39%34%
Very Effective21%19%23%
Somewhat Effective42%40%40%
Not Very Effective18%19%17%
Not At All Effective17%20%17%
Net Effective+27+19+29

Collins Seen/Read/Heard (February Only)

ResponseFeb 2026
Yes, have seen/read/heard77%
No, have not22%
SRH Impact (Feb 2026)%
Total More Likely FOR Collins33%
Total More Likely AGAINST Collins46%
Much More Likely FOR17%
Somewhat More Likely FOR16%
Somewhat More Likely AGAINST14%
Much More Likely AGAINST33%
No Difference / Haven't Seen18%
Net SRH Impact-13

No Kings Movement & Demographics (Feb 2026 Only)

No Kings MovementFeb 2026
Yes, part of No Kings protest movement36%
No, not part of movement57%
Don't Know7%
Pollster:1892
Field Date:February 27, 2026
Sample:n=600
MoE:±4.0%

Vote Likelihood

ResponseFeb 2026
How likely are you to vote in the November elections?
Definitely voting93.9%
Probably voting4.8%
50/50 chance0.9%
DK/Refused0.4%
ResponseFeb 2026
How likely are you to vote in Maine's Democratic primary? (n=351)
Definitely voting84.4%
Probably voting10.0%
50/50 chance5.6%

Generic Senate Ballot

ResponseFeb 2026
The Democrat candidate48.7%
The Republican candidate38.9%
DK/Refused12.3%
MarginD +9.8

Candidate Favorability

Donald Trump

ResponseFeb 2026
Total Favorable39.7%
Total Unfavorable57.3%
Very Favorable29.8%
Somewhat Favorable10.0%
Somewhat Unfavorable2.9%
Very Unfavorable54.4%
No Opinion2.3%
Never Heard Of0.6%
Net Fav-17.6

Susan Collins

ResponseFeb 2026
Total Favorable37.1%
Total Unfavorable57.8%
Very Favorable10.6%
Somewhat Favorable26.5%
Somewhat Unfavorable20.6%
Very Unfavorable37.3%
No Opinion4.7%
Never Heard Of0.3%
Net Fav-20.7

Janet Mills

ResponseFeb 2026
Total Favorable41.2%
Total Unfavorable52.3%
Very Favorable12.0%
Somewhat Favorable29.2%
Somewhat Unfavorable10.4%
Very Unfavorable41.9%
No Opinion5.3%
Never Heard Of1.2%
Net Fav-11.1

Graham Platner

ResponseFeb 2026
Total Favorable44.8%
Total Unfavorable26.3%
Very Favorable21.4%
Somewhat Favorable23.5%
Somewhat Unfavorable7.4%
Very Unfavorable18.9%
No Opinion14.4%
Never Heard Of14.5%
Net Fav+18.5

Collins Job Approval

ResponseFeb 2026
Total Approve39.3%
Total Disapprove56.5%
Strongly Approve10.0%
Somewhat Approve29.3%
Somewhat Disapprove18.4%
Strongly Disapprove38.1%
DK/Refused4.2%
Net Approve-17.2

Ballot Tests

Collins vs. Mills

ResponseFeb 2026
Democrat Janet Mills46.3%
Republican Susan Collins44.0%
Undecided9.8%
MarginD +2.3

Collins vs. Platner

ResponseFeb 2026
Democrat Graham Platner48.8%
Republican Susan Collins42.0%
Undecided9.2%
MarginD +6.8

Democratic Primary Ballot (n=351)

ResponseFeb 2026
Graham Platner53.2%
Janet Mills19.5%
David Costello1.8%
Andrea LaFlamme0.3%
Undecided25.2%

Collins Perceptions

Collins Effectiveness

ResponseFeb 2026
Total Effective51.2%
Total Ineffective45.0%
Very Effective19.2%
Somewhat Effective32.1%
Somewhat Ineffective17.2%
Very Ineffective27.8%
DK/Refused3.7%
Net Effective+6.2

Collins: Independent Voice vs. Trump Supporter

ResponseFeb 2026
Mostly a supporter of Donald Trump48.9%
Mostly an independent voice for Maine40.6%
DK/Refused10.5%

Collins Ideology

ResponseFeb 2026
Total Conservative63.0%
Total Liberal6.9%
Very Conservative26.4%
Somewhat Conservative36.6%
Moderate24.7%
Somewhat Liberal4.8%
Very Liberal2.1%
DK/Refused5.5%

Collins Issue Statements

StatementAgreeDisagreeDK
Collins is working to protect Social Security44.9%36.8%18.3%
Collins is working to protect healthcare43.8%46.1%10.1%
Collins is working to protect Maine's rivers and water quality51.2%31.8%17.0%
Collins is working to support firefighters and first responders62.0%20.0%18.1%
Collins supports ICE and crackdown on undocumented immigrants77.9%14.7%7.3%
Collins votes to protect big pharma54.5%20.8%24.8%

Collins Seen/Read/Heard

ResponseFeb 2026
Yes84.5%
No/All Other15.5%
SRH Impact (n=507)Feb 2026
Total More Likely (for Collins)33.1%
Total Less Likely (for Collins)53.7%
Much More Likely14.3%
Somewhat More Likely18.8%
Somewhat Less Likely11.0%
Much Less Likely42.7%
DK/Refused13.3%
Net SRH Impact-20.6
SRH Open-Ended Themes (n=507)Feb 2026
Campaign ads21.8%
Negative appraisal of Collins9.2%
Trump alignment7.6%
Maine funding projects6.3%
SAVE Act support6.2%
Voting record / party line5.6%
ICE support5.4%
Positive appraisal of Collins4.9%
State of the Union / Oval Office appearance3.2%
Communications (newsletters, social media)2.6%
Healthcare & abortion stance2.3%
Perceived inconsistency / RINO label1.6%
Other8.6%
Don't Know/Refused14.7%

Mills & Platner Ideology

Janet MillsFeb 2026
Total Conservative5.2%
Total Liberal67.6%
Moderate21.6%
DK/Refused5.8%
Graham PlatnerFeb 2026
Total Conservative2.0%
Total Liberal59.8%
Moderate12.6%
DK/Refused25.6%

Demographics

2024 Presidential Vote%
Kamala Harris50.0%
Donald Trump40.7%
Third party / Didn't vote6.8%
DK/Refused2.5%
Party Registration%
Republican37.3%
Democrat34.4%
Independent/Unaffiliated/Other24.3%
DK/Refused4.1%
Congressional District%
CD-153.7%
CD-246.3%

Survey Methodology Comparison

Parameterco/efficient W1co/efficient W2Axis W1Axis W2Axis W31892
Field DateOct 15-17, 2025Nov 6-10, 2025Nov 19, 2025Jan 7, 2026Feb 3-5, 2026Feb 27, 2026
Sample Sizen=1,036n=1,700n=523 (Wave 3; all waves tracked)n=600
PopulationLikely General Election VotersLikely General Election VotersGeneral Election Survey
ModeMobile Text & Live InterviewsLive Telephone InterviewNot specified
MoE±3.23%Not specified±4.37%±4.0%
SponsorOne NationOne NationNot specified

Key Methodological Differences

DifferenceDetail
Ballot Test Structureco/efficient included a "Someone else" option alongside named candidates and "Undecided." Axis used named candidates with lean follow-up probes (Definitely/Probably/Lean) and a "Hard Undecided" category. 1892 used named candidates and "Undecided." These structural differences affect the distribution of vote share.
Interview ModeAxis conducted live telephone interviews. co/efficient used mixed-mode (mobile text responses and live interviews). Mode effects can influence responses, particularly on sensitive questions.
Favorability Wordingco/efficient asked "What is your opinion of [name]?" with Favorable/Unfavorable/Unsure/Never Heard. Axis and 1892 used standard favorable/unfavorable with Very/Somewhat intensity scales.
Dem Primary Universeco/efficient tested among "Democrat Primary Voters Only." Axis filtered to Democrats and Democratic-leaning independents planning to vote in the primary. 1892 tested among a subsample of n=351.
Trump Questionco/efficient and Axis both asked Trump job approval (approve/disapprove). 1892 asked Trump favorability (favorable/unfavorable). Related but distinct measures.