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 13th Norfolk

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

Decided: only a Democrat is running · Joshua Brian Tarsky (D)

Massachusetts House District 13th Norfolk: Decided: only a Democrat is runningMassachusetts House 10th Suffolk: chance of a Democratic win >99%; 2024 president D+49Massachusetts House 11th Norfolk: chance of a Democratic win >99%; 2024 president D+28Massachusetts House 12th Middlesex: chance of a Democratic win >99%; 2024 president D+63Massachusetts House 14th Norfolk: chance of a Democratic win >99%; 2024 president D+51Massachusetts House 5th Middlesex: chance of a Democratic win 98%; 2024 president D+51Massachusetts House 8th Middlesex: chance of a Democratic win >99%; 2024 president D+38Massachusetts House 9th Norfolk: chance of a Democratic win 6%; 2024 president D+13Massachusetts House District 13th Norfolk: Decided: only a Democrat is running5th Middlesex14th Norfolk9th Norfolk8th Middlesex13th Norfolk
Safe DLean DToss-upLean RSafe RHatched: not up in 2026 (shaded by holder) · dashed: other state

District 13th Norfolk is safe Democratic. Of its 7 neighbouring districts, 6 favour Democrats, 1 favours Republicans.

StatusDecided: only a Democrat is running
CandidatesJoshua Brian Tarsky (D)
Candidate list fromofficial
Current memberJosh Tarsky

How it has voted

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

Legislature 2024no two-party contest; won by Joshua Tarsky (Democrat)
President 2024D+50
← RepublicanDemocratic →

Who lives here

Census Bureau, American Community Survey 2019-2023.

This districtMassachusetts
Median household income$215,488$101,341
Bachelor's degree or more (25+)81%47%
Median age4340
White (not Hispanic)82%68%
Black1%7%
Hispanic3%13%
Asian10%7%
Born abroad15%18%
Jobs in manufacturing7%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.