99chambers

Massachusetts State Senate seat · lines in effect since 2022

Massachusetts State Senate: Worcester and Middlesex District

A district of about 177,000 people, 42% of adults with a bachelor's degree. It votes D+17.5 relative to the nation for president.

John Cronin (D) · since Nov 3, 2020Next election Nov 7, 2028The 2026 race →

Where it sits among all 40 seats

Every Massachusetts State Senate 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+17.528th most
Democratic
Most DemocraticMost Republican21st seat · the majority lineDistrict D10

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.

20222024
Massachusetts State SenateD+20.5D+18.2

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 40 seats. Small marks are other seats in Massachusetts. The black marker is District D10.

Adults with a bachelor's degree42% 36th pct · 26th of 40 in MA

Lower than 64% of seats.

White adults without a degree42% 72nd pct · 12th of 40 in MA

Higher than 72% of seats.

Hispanic residents16% 77th pct · 10th of 40 in MA

Higher than 77% of seats.

Black residents4% 46th pct · 22nd of 40 in MA

Lower than 54% of seats.

Asian residents5% 51st pct · 20th of 40 in MA

Higher than 51% of seats.

People per square mile684 28th pct · 29th of 40 in MA

Less dense than 72% 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 D20
50% college gradsD+16.1Held DDistrict D04
40% college gradsD+9.7Held DDistrict D35
51% college gradsD+18.3Held DDistrict D02
33% college gradsD+10.9Held 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. John J. Cronin (D)
    2023– · Won 2022 by 20.5, 2024 by 18.2, 2026 unopposed

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