99chambers

Massachusetts House of Representatives seat · lines in effect since 2022

Massachusetts House of Representatives: 10th Suffolk District

A district of about 45,000 people, 72% of adults with a bachelor's degree. It votes D+49.8 relative to the nation for president.

Billy MacGregor (D) · since Nov 5, 2024Next election Nov 7, 2028The 2026 race →

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.

D+49.830th most
Democratic
Most DemocraticMost Republican81st seat · the majority lineDistrict 132

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

Every race on these lines

Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.

2024
U.S. SenateD+38.4

Outlined: the race for this seat itselfBlank: no race that year

Source: 99chambers results archive: precinct results allocated to current lines; 2026: civicAPIUpdated Nov 7, 2026, 3:01 PM 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 132.

Adults with a bachelor's degree72% 89th pct · 19th of 160 in MA

Higher than 89% of seats.

White adults without a degree19% 21st pct · 127th of 160 in MA

Lower than 79% of seats.

Hispanic residents9% 58th pct · 67th of 160 in MA

Higher than 58% of seats.

Black residents2% 35th pct · 104th of 160 in MA

Lower than 65% of seats.

Asian residents9% 67th pct · 54th of 160 in MA

Higher than 67% of seats.

People per square mile6,034 77th pct · 38th of 160 in MA

Denser than 77% 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 63
71% college gradsD+51.9Held DDistrict 81
74% college gradsD+63.1Held DDistrict 68
59% college gradsD+46.6Held DDistrict 90
59% college gradsD+41.1Held 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.

  1. William Macgregor (D)
    2025– · Won 2024 unopposed, 2026 by 81.9
  2. Edward Francis Coppinger (D)
    2023–2025 · Won 2022 by 99.9

Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)