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Massachusetts's 3rd Congressional District
The current officeholder, the 2024 result, and a precinct-level model you can run yourself — built from how Massachusetts actually voted.
Model Massachusetts's 3rd Congressional District →
Current officeholder
Lori Trahan Democratic
2024 result
Democratic D+100.0
2024 votes cast
264,698
Office
U.S. House
Who lives in this district
This district is home to about 777,948 people, median age 39.2, median household income $97,616.
Population
777,948
Median age
39.2
Median household income
$97,616
Bachelor's degree or higher
39.6%
Race & ethnicity: White 61.1% · Black 4.6% · Hispanic 22.2% · Asian 7.9%
Source: U.S. Census Bureau, 2019–2023 American Community Survey (5-year).
Find your district
Enter a ZIP code or a district (e.g. NC-4) to find your U.S. House district and who represents it.
Model Massachusetts's 3rd Congressional District in five steps
- Set the candidates. Name the contenders for the Massachusetts's 3rd Congressional District (or keep the generic Democrat / Republican defaults). The map starts from real 2024 results in every precinct.
- Apply a swing. Move vote share statewide, or by demographic cohort, with a slider. The map and the running tally recompute instantly.
- Model turnout. Mobilize or depress turnout for any group — turnout and persuasion are modeled separately, the way a real campaign thinks about them.
- Drill to precincts. Zoom from the state down to individual precincts and override any of them by hand.
- Roll up & share. Roll the result up to chamber control, then publish a shareable, frozen link to your scenario.
Open Massachusetts's 3rd Congressional District in the simulator →