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 3rd Essex

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

Decided: only a Democrat is running · Andres Xavier Vargas (D)

Massachusetts House District 3rd Essex: Decided: only a Democrat is runningMassachusetts House 14th Essex: chance of a Democratic win >99%; 2024 president D+20Massachusetts House 15th Essex: chance of a Democratic win 95%; 2024 president D+3Massachusetts House 1st Essex: chance of a Democratic win >99%; 2024 president D+28New Hampshire House Rockingham 18: chance of a Democratic win 20%; 2024 president R+16New Hampshire House Rockingham 20: chance of a Democratic win <1%; 2024 president R+18New Hampshire House Rockingham 36: chance of a Democratic win 3%; 2024 president R+11Massachusetts House District 3rd Essex: Decided: only a Democrat is running15th Essex1st EssexNH Rockingham 363rd Essex
Safe DLean DToss-upLean RSafe RHatched: not up in 2026 (shaded by holder) · dashed: other state

District 3rd Essex is safe Democratic. Of its 6 neighbouring districts, 3 favour Democrats, 3 favour Republicans. 3 of them are across the state line.

StatusDecided: only a Democrat is running
CandidatesAndres Xavier Vargas (D)
Candidate list fromofficial
Current memberAndy Vargas

How it has voted

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

Legislature 2024uncontested (D)
President 2024D+12
← RepublicanDemocratic →

Who lives here

Census Bureau, American Community Survey 2019-2023.

This districtMassachusetts
Median household income$81,149$101,341
Bachelor's degree or more (25+)30%47%
Median age3840
White (not Hispanic)61%68%
Black3%7%
Hispanic31%13%
Asian1%7%
Born abroad14%18%
Jobs in manufacturing14%9%
Jobs in farming or mining0%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.