Massachusetts House of Representatives seat · lines in effect since 2022
Massachusetts House of Representatives: 30th Middlesex District
A district of about 44,000 people, 50% of adults with a bachelor's degree. It votes D+23.9 relative to the nation for president.
Where it sits among all 160 seats
Every Massachusetts House of Representatives seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.
Democratic
Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Who lives here, compared
Grey bars show the spread of all 160 seats. Small marks are other seats in Massachusetts. The black marker is District 88.
Higher than 60% of seats.
Higher than 55% of seats.
Higher than 51% of seats.
Lower than 60% of seats.
Higher than 69% of seats.
Denser than 64% of seats.
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET
Seats most like this one
Nearest seats on demographics, density and lean.
District 10758% college gradsD+21.4Held DDistrict 105
59% college gradsD+21.4Held DDistrict 99
41% college gradsD+15.5Held DDistrict 106
62% college gradsD+29.6Held D
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Who has held it
These lines took effect in 2022.
- Democratic (D)
2027– · Won 2026 unopposed - Richard M. Haggerty (D)
2023–2027 · Won 2022 by 98.8, 2024 unopposed
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)