99chambers

Massachusetts House of Representatives seat · lines in effect since 2022

Massachusetts House of Representatives: 15th Essex District

A district of about 42,000 people, 21% Hispanic, 37% of adults with a bachelor's degree. It votes D+4.8 relative to the nation for president.

Ryan Hamilton (D) · since Nov 8, 2022Next 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+4.8133rd most
Democratic
Most DemocraticMost Republican81st seat · the majority lineDistrict 38

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.

2026
Massachusetts House of RepresentativesD+23.8

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 38.

Adults with a bachelor's degree37% 33rd pct · 108th of 160 in MA

Lower than 67% of seats.

White adults without a degree44% 67th pct · 53rd of 160 in MA

Higher than 67% of seats.

Hispanic residents21% 82nd pct · 29th of 160 in MA

Higher than 82% of seats.

Black residents4% 55th pct · 72nd of 160 in MA

Higher than 55% of seats.

Asian residents3% 40th pct · 96th of 160 in MA

Lower than 60% of seats.

People per square mile1,393 45th pct · 88th of 160 in MA

Less dense than 55% 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 49
32% college gradsD+2.1Held DDistrict 145
34% college gradsD+11.6Held DDistrict 35
34% college gradsD+10.5Held DDistrict 151
39% college gradsD+13.5Held 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. Democratic (D)
    2027– · Won 2026 by 23.8
  2. Ryan M. Hamilton (D)
    2023–2027 · Won 2022 by 90.4, 2024 unopposed

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