UNH Pine Tree Poll shows Midcoast Democratic primary trends for Sagadahoc County

Graham Platner, a 41-year-old oyster farmer from Sullivan in Hancock County and Marine Corps veteran, recorded 64% support to Gov. Janet Mills’ 26% in the University of New Hampshire Survey Center’s Pine Tree State Poll of likely Democratic primary voters. The poll was fielded Feb. 12–16 and released Feb. 24, with a Democratic-sample size of 462 and a margin of error of ±4.6%, figures that put Platner’s advantage at roughly a 38-point margin in the Democratic primary snapshot.

The same UNH poll projects different general-election dynamics: Platner leads incumbent Sen. Susan Collins 49% to 38% in a hypothetical matchup, while Mills and Collins are essentially tied at 41% to 40%, a spread inside the poll’s stated margin of error. The February results show Platner up from 58% in UNH’s October survey and Mills up from 24%, while undecided Democratic primary respondents fell from 14% in October to 6% in February.

Methodological caveats stand out for Midcoast observers. The survey sample contained a larger share of younger and more progressive respondents than typical Maine primary electorates, with about 29% of respondents aged 18–34 and roughly 27%–28% aged 65 or older. Press reports of the topline also note that about one-fifth of respondents identified as socialists, a composition that differs from primary electorates where voters 65 and older can sometimes make up more than half of turnout.

Platner’s profile and recent controversies are central to the numbers. Despite unearthed social media posts last fall and the revelation of a chest tattoo whose image has been used as a Nazi symbol, Platner apologized, said he did not know the symbol’s connotations, and had the tattoo covered; his support in the UNH sample nonetheless rose six points since October. WMTW’s reporting of the UNH sample recorded Platner with 71% favorability among likely Democratic primary voters and Mills with 51% favorability.

Independent voters in the UNH sample tilt toward Platner in November projections, a dynamic that matters for Sagadahoc County’s mixed electorate. Independents favored Platner over Collins 47% to 38% but favored Collins over Mills 35% to 29%, and the poll found more undecided independents if Mills were the Democratic nominee than if Platner were. “By the time the election rolls around, I think you will see Republicans going back to Collins even if they don't like her,” Smith said. “Will that be enough to get her over the top? I don't know. That's going to be hard in a midterm election.”

For voters and political organizers in Sagadahoc County and the Midcoast, the survey raises two concrete tests before the June 9 primary. First, will turnout among older voters - who made up only about 27%–28% of the UNH sample but often dominate actual primary electorates - mirror past primaries, or will the poll’s younger skew hold? Second, will independents in coastal communities drawn to Platner’s oyster farming and veteran credentials consolidate behind him in a general election, or will they align with Collins as Smith predicts? The Pine Tree State Poll snapshot (fielded Feb. 12–16; released Feb. 24) gives numbers to those questions, but the June 9 turnout in Sagadahoc County and the broader state electorate will determine whether the February margins carry forward.