2026 Maine Senate Democratic Primary Polling

Name: 2026 Maine Senate Democratic Primary Polling
Creator: Decision Desk HQ
License: https://votes-docs.decisiondeskhq.com/terms-of-service

Inactive

If the DEM Primary for Maine Senate were being held today, who would Democrats vote for?

Candidate	Average	1W	1M
Graham Platner	70.30%	–	–
Janet Mills	14.80%	–	–
Platner +55.5%
Jun 16, 7:49 PM EDTPlatner +55.5%

Published Polls

Pollster / Sponsor	Date	Sample Size	Result
Tavern Research	Jun 5	704 LV	Platner +52.00%
Meridian Research	Oct 1 – 3	600 LV	Team B +2.0%
Vantage Analytics	Oct 2 – 4	637 RV	Team B +2.0%
Northgate Insights	Oct 3 – 5	674 A	Team B +2.0%
Cardinal Strategies	Oct 4 – 6	711 LV	Team A +4.0%
Beacon Public Opinion	Oct 5 – 7	748 RV	Team A +4.0%
Harborview Data	Oct 6 – 8	785 A	Team A +4.0%
Summit Polling	Oct 7 – 9	822 LV	Team A +4.0%
Ridgeline Surveys	Oct 8 – 10	859 RV	Team B +3.0%
Meridian Research	Oct 9 – 11	896 A	Team B +3.0%
Vantage Analytics	Oct 10 – 12	933 LV	Team A +3.0%
Northgate Insights	Oct 11 – 13	970 RV	Team A +3.0%
Cardinal Strategies	Oct 12 – 14	1,007 A	Team A +3.0%
Beacon Public Opinion	Oct 13 – 15	1,044 LV	Team A +3.0%
Harborview Data	Oct 14 – 16	1,081 RV	Team A +3.0%
Summit Polling	Oct 15 – 17	1,118 A	Team B +4.0%
Ridgeline Surveys	Oct 16 – 18	1,155 LV	Team A +2.0%
Meridian Research	Oct 17 – 19	1,192 RV	Team A +2.0%
Vantage Analytics	Oct 18 – 20	1,229 A	Team A +2.0%
Northgate Insights	Oct 19 – 21	1,266 LV	Team A +2.0%

2026 Maine Senate Democratic Primary Polling

Published Polls

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