Election forecasts you can inspect.Tested models, shown with their sources and their uncertainty.

Updated October 22, 2026, 09:28 UTC

State legislatures › Massachusetts House

Massachusetts House District 5th Worcester

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

Decided: only a Republican is running · Donald Roger Berthiaume, Jr. (R)

Massachusetts House District 5th Worcester: Decided: only a Republican is runningMassachusetts House 13th Worcester: chance of a Democratic win >99%; 2024 president D+34Massachusetts House 17th Worcester: chance of a Democratic win >99%; 2024 president D+18Massachusetts House 1st Hampden: chance of a Democratic win <1%; 2024 president R+8Massachusetts House 1st Worcester: chance of a Democratic win 5%; 2024 president D+7Massachusetts House 2nd Franklin: decided: no democrat or republican is running; 2024 president D+10Massachusetts House 2nd Worcester: chance of a Democratic win >99%; 2024 president R+2Massachusetts House 6th Worcester: chance of a Democratic win 1%; 2024 president R+7Massachusetts House 7th Hampden: chance of a Democratic win >99%; 2024 president D+13Massachusetts House District 5th Worcester: Decided: only a Republican is running13th Worcester6th Worcester1st Worcester1st Hampden2nd Franklin5th Worcester
Safe DLean DToss-upLean RSafe RHatched: not up in 2026 (shaded by holder) · dashed: other state

District 5th Worcester is safe Republican. Of its 8 neighbouring districts, 4 favour Democrats, 3 favour Republicans, 1 has no 2026 forecast.

StatusDecided: only a Republican is running
CandidatesDonald Roger Berthiaume, Jr. (R)
Candidate list fromofficial
Current memberDonnie Berthiaume

How it has voted

On its current lines. Legislative contests and the top-of-ticket vote inside the district.

Legislature 2024uncontested (R)
President 2024R+10
← RepublicanDemocratic →

Who lives here

Census Bureau, American Community Survey 2019-2023.

This districtMassachusetts
Median household income$86,115$101,341
Bachelor's degree or more (25+)31%47%
Median age4440
White (not Hispanic)90%68%
Black1%7%
Hispanic5%13%
Asian1%7%
Born abroad3%18%
Jobs in manufacturing12%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.