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Updated October 22, 2026, 09:28 UTC

State legislatures › Massachusetts Senate

Massachusetts Senate District Third Bristol and Plymouth

2026 forecast · Updated October 22, 2026, 09:28 UTC

Decided: only a Republican is running · Kelly A. Dooner (R)

Massachusetts Senate District Third Bristol and Plymouth: Decided: only a Republican is runningMassachusetts Senate Bristol and Norfolk: chance of a Democratic win >99%; 2024 president D+19Massachusetts Senate First Bristol and Plymouth: chance of a Democratic win 94%; 2024 president R+3Massachusetts Senate Norfolk, Plymouth and Bristol: chance of a Democratic win >99%Massachusetts Senate Plymouth and Barnstable: chance of a Democratic win 88%; 2024 president D+12Massachusetts Senate Second Bristol and Plymouth: chance of a Democratic win 95%; 2024 president D+3Massachusetts Senate Second Plymouth and Norfolk: chance of a Democratic win >99%Rhode Island Senate 18: chance of a Democratic win >99%; 2024 president D+24Rhode Island Senate 32: chance of a Democratic win >99%; 2024 president D+34Rhode Island Senate 8: chance of a Democratic win >99%; 2024 president D+26Massachusetts Senate District Third Bristol and Plymouth: Decided: only a Republican is runningRI 8Bristol and NorfolkSecond Bristol and PlymouthFirst Bristol and PlymouthThird Bristol and Plymouth
Safe DLean DToss-upLean RSafe RHatched: not up in 2026 (shaded by holder) · dashed: other state

District Third Bristol and Plymouth is safe Republican. Of its 9 neighbouring districts, 9 favour Democrats. 3 of them are across the state line.

StatusDecided: only a Republican is running
CandidatesKelly A. Dooner (R)
Candidate list fromofficial
Current memberKelly Dooner

Who lives here

Census Bureau, American Community Survey 2019-2023.

This districtMassachusetts
Median household income$95,193$101,341
Bachelor's degree or more (25+)32%47%
Median age4440
White (not Hispanic)82%68%
Black4%7%
Hispanic5%13%
Asian1%7%
Born abroad9%18%
Jobs in manufacturing10%9%
Jobs in farming or mining1%0%

Initial version. This model was tested on every state legislative election from 1994 to 2024 before publication, forecasting each as if it had not happened. It beat the simple rule “the party that holds the seat keeps it”, and its chamber seat counts were off by 2.9 seats on average (target: under 3). Districts with no two-party race last time are read from their own presidential vote, a change tested in advance that cut their average error from 17 to 13 points. It missed one of its five accuracy targets: in 2024, the calmest year on record, its ranges were wider than they needed to be (92% of results fell inside its 80% ranges; target: at most 88%). Treat the ranges as cautious. The full test record and code.