Overview
- Pan Atlantic Research finds Graham Platner leading Susan Collins 44%–40%, while Janet Mills and Collins are tied 44%–44%, with net favorability at Platner +12, Mills −6, Collins −14.
- A late‑February UNH Pine Tree State poll shows Platner ahead of Collins 49%–38% and a narrower Mills edge of 41%–40% against the incumbent.
- Ad trackers report more than $78 million already spent, with Republican groups reserving over $45 million to about $33 million for Democratic groups as Collins receives robust outside support.
- The Bangor Daily News reports Collins’ approval is 12 points underwater; Platner has spent about $3.1 million on ads compared with roughly $730,000 by Mills, with Collins relying more on allied outside groups.
- Prediction markets on Polymarket and Kalshi lean toward Democrats flipping the seat and give Platner strong odds to win the primary, as a Bangor Daily News letter urges Mills to exit the race.