There’s no shortage of competitive, high-stakes races and candidates with famous last names in Maine’s state primary on Tuesday.
Primaries for U.S. Senate and U.S. House will set the stage for a midterm general election in which Maine is expected to play a critical role in deciding control of both chambers. Maine voters will also have the opportunity in November to demonstrate the state’s fiercely independent streak when it comes to electing a new governor.
The races feature the son of a U.S. senator, the daughter of a congresswoman, the brother of a former governor and the nephew and cousin of two presidents.
Republican Sen. Susan Collins is unopposed for renomination to a sixth term, which would put her on track to become the chamber’s longest-serving member from Maine.
Collins, the only Senate Republican to represent a state that Democratic presidential nominee Kamala Harris carried in 2024, is a pivotal figure in the effort to win control of the chamber in November. The 51% of the vote she received in her 2020 election bid was her poorest showing since the 49% she received in her first successful run in 1996. She is frequently at the top of Democrats’ list of incumbents to oust, but her Democratic opponents have never surpassed the 44% mark in her five previous races.
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Graham Platner is the leading contender for the Democratic nomination to challenge Collins. He’s a Marine and U.S. Army veteran who took up oyster farming following combat tours in Iraq and Afghanistan. Platner originally faced a competitive primary against Gov. Janet Mills, the preferred candidate among some national Democratic leaders, but the second-term governor dropped out of the race in April citing fundraising challenges.
Platner has two remaining primary opponents, one of them a write-in candidate. Mills is still on the ballot, despite suspending her campaign.
As of May 20, Platner led all candidates, including Collins, in fundraising for the cycle, although Collins sat atop a larger war chest.
He received key early backing from Vermont U.S. Sen. Bernie Sanders, who reiterated his support despite recent allegations that Platner had sent sexually explicit text messages to several women while married. Platner was embroiled in another controversy earlier in the campaign regarding a tattoo he once had that was recognized as a Nazi symbol.
In the 2nd Congressional District, Democratic U.S. Rep. Jared Golden announced in November that he would not seek a fifth term in a district Trump won in 2024, along with its one electoral vote. Maine is one of two states that allocates some of its presidential electoral votes by congressional district.
The Democratic field to replace Golden includes former congressional aide Jordan Wood, state Auditor Matt Dunlap and state Sen. Joe Baldacci, brother of Democratic former Gov. John Baldacci.
The winner will face former two-term Republican Gov. Paul LePage, who is unopposed for the nomination.
Wood has far outraised the field, including LePage, in campaign contributions, although LePage had the most money in the bank as of May 20.
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In the gubernatorial primaries, state Secretary of State Shenna Bellows, former state Senate President Troy Jackson, renewable energy company co-founder Angus King III, former state House Speaker Hannah Pingree and former Centers for Disease Control and Prevention Deputy Director Nirav Shah all seek the Democratic nomination.
The Republican field includes former healthcare CEO Jonathan Bush, former U.S. State Department official Bobby Charles, former state Senate Majority Leader Garrett Mason and businessman Ben Midgley.
King is the son of independent U.S. Sen. Angus King. Pingree is the daughter of Democratic U.S. Rep. Chellie Pingree. Bush is related to Republican former Presidents George H.W. Bush and George W. Bush.
The governor’s office in Maine frequently changes party hands. The state hasn’t elected consecutive governors from the same party in 74 years.
Maine is divided into 16 counties, but elections are run by the state’s hundreds of cities and towns, a practice common in New England. Portland is by far Maine’s most populous city and forms the heart of the state’s Democratic base. The two congressional districts largely track with the state’s political demographics. The 1st Congressional District along the Southern Maine Coast is heavily Democratic, while the massive 2nd District to the north includes the bulk of the smaller, more rural areas where Trump performed best.
The state uses a ranked-choice voting system in which voters rank the candidates in order of preference. If no candidate receives a majority of first-place votes, the last-place candidate is dropped, and votes cast for that candidate are reallocated among the rest of the field according to the preferences of the dropped candidate’s voters. This process repeats until one candidate emerges with a majority of votes.
