Full Breakdown
Graham Platner Leads Susan Collins in Latest Maine Senate Poll as Race Intensifies
5/22/2026, 9:59:37 PM
Core Event: New Pan-Atlantic Research Poll Shows 7-Point Lead
A Pan-Atlantic Research omnibus poll conducted May 8-18 with 827 likely voters (±3.7 pp margin) finds Democrat Graham Platner at 48 % versus incumbent Republican Sen. Susan Collins at 41 %; 11 % remain undecided. Women favor Platner 53 % to 34 %; men favor Collins 47 % to 44 %. In Maine’s 1st Congressional District Platner leads by 20 points, while Collins holds a 45 %-41 % edge in the 2nd District.
Background & Context: Collins’ Tenure, Mills’ Exit, Senate Stakes
Collins has held the seat for almost three decades and won re-election in 2020 with 51 % of the vote despite a Democratic-leaning electorate. Former Gov. Janet Mills suspended her Senate bid in late April after trailing in polls, leaving Platner as the presumptive Democratic nominee. The race is a focal point for Democrats, who need four net gains to flip the 53-47 Republican Senate majority. President Donald Trump’s favorability in Maine sits at 38 %, a factor Republicans fear could hurt Collins.
Key Figures & Endorsements
- Graham Platner – oyster farmer, Marine veteran, former Army contractor; endorsed by Sen. Bernie Sanders, Sen. Elizabeth Warren, and Senate Minority Leader Chuck Schumer after Mills’ exit.
- Susan Collins – five-term Republican incumbent; campaign cash on hand exceeded $10 million in March, roughly double her 2020 level.
- Pine Tree Results – a Republican-aligned super-PAC with a $12.7 million war chest that has purchased $2 million in attack ads against Platner.
- Republican ad buys – $80-$125 million in television spots booked through November, surpassing 2020 spending.
Data & Statistics
- Favorability: Platner net +3 pp (47 % favorable, 44 % unfavorable); Collins net -18 pp (40 % favorable, 58 % unfavorable); Trump net -23 pp.
- Prediction markets: Kalshi (70 % chance) and Polymarket (73 % chance) give Democrats the edge.
- Other polls: Emerson College and Maine People’s Resource Center both show Platner leading by roughly 9-10 points.
- Voter demographics: Independents (? 1/3 of electorate) favor Platner 48 %-35 %; women back Platner by ~20 points.
Official Statements & Responses
Collins’ campaign spokesperson Shawn Roderick cautioned that “these polls haven’t been particularly useful in predicting outcomes” and noted a prior poll that incorrectly showed Democrat Sara Gideon ahead. Platner’s Instagram post decried the Pine Tree Results ads as “all out-of-state money, not a single dollar coming from Maine.” Schumer’s brief post-Mills call to Platner was reported as focused solely on defeating Collins, with Platner later emphasizing he will not take direction from the DNC.
Criticism & Opposition
Platner faces scrutiny over archived Reddit comments on rape victims, police, and minorities, and over a tattoo resembling the Nazi “Totenkopf” that he covered and later pledged to remove. Republican allies have highlighted these “red flags” in attack ads, while some Democrats worry the controversies could alienate moderate voters.
On-the-Ground Voter Concerns
A poll of likely voters shows 75 % list cost-of-living and inflation as top issues; 51 % say they are financially worse off than a year ago. These economic anxieties dominate the race narrative.
Conflicting Reports & Gaps
Polls differ on the size of Platner’s lead (4-point vs. 7-point margins) and on district-level advantages. Prediction markets suggest a stronger Democratic edge than some polls. The impact of the 11 % undecided voters and the upcoming Democratic primary (Platner vs. David Costello) remain uncertain.
Verbatim Quotes
- “We understand that pollsters have a difficult time figuring out Maine Senate races, but we would note that this same poll had Sara Gideon beating Susan Collins by the same seven-point margin,” — Shawn Roderick, Collins campaign spokesperson
- “A Republican super PAC called ‘Pine Tree Results,’ funded by twelve billionaires, just bought $2 million worth of attack ads against our campaign. It’s all out-of-state money. Not a single dollar coming from Maine,” — Graham Platner, Instagram post
- “I don’t think Senator Schumer has risen to the occasion, and I think we need new leadership in the party, without question.” — Graham Platner, New York Times interview
- “I absolutely would not have gone through life having this on my chest if I knew that—and to insinuate that I did is disgusting. I am already planning to get this removed.” — Graham Platner, regarding his former tattoo
- “If the hospital closes and that really impacts you, you’re probably a working-class person.” — Graham Platner, Boston Globe interview
What’s Next
The Democratic primary on June 9 will pit Platner against former official David Costello. Assuming both nominees clear their primaries, the general election is set for Nov 3, with both campaigns expected to intensify ad spending and voter outreach as Maine’s economic concerns dominate the final stretch.
