NEW QUANTUS INSIGHTS POLL | June 12, 2026
Our latest Maine U.S. Senate survey finds the race tightening sharply since March, with Graham Platner now holding a narrow 1-point edge over Susan Collins.
📊 Maine U.S. Senate
🔵 Graham Platner: 46%
🔴 Susan Collins: 45%
⚪️ Undecided: 7%
⚪️ Other: 2%
––––––––––––––––––––––––––
📊 Generic Congressional Ballot
🔵 Democratic candidate: 50%
🔴 Republican candidate: 40%
⚪️ Undecided: 8%
⚪️ Other: 3%
––––––––––––––––––––––––––
📊 Susan Collins
Favorable: 42%
Unfavorable: 56%
Very unfavorable: 49%
––––––––––––––––––––––––––
📊 Graham Platner
Favorable: 40%
Unfavorable: 57%
Very unfavorable: 37%
The Maine Senate race has moved from an early Democratic advantage to a statistical tie. Platner led Collins by 7 points in our March survey, but now leads by just 1. Collins remains deeply underwater, yet she is running ahead of the Republican brand in a state where Democrats lead the generic ballot by 10. Platner’s standing has softened amid recent controversies, and the race remains highly competitive and unsettled.