99chambers

Massachusetts State Senate seat · lines in effect since 2022

Massachusetts State Senate: First Bristol and Plymouth District

A district of about 173,000 people, 26% of adults with a bachelor's degree. It votes R+4.2 relative to the nation for president.

Michael Rodrigues (D) · since Nov 2, 2010Next 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.

R+4.240th most
Democratic
Most DemocraticMost Republican21st seat · the majority lineDistrict D37

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.

20222026
Massachusetts State SenateD+15.3D+14.4

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 40 seats. Small marks are other seats in Massachusetts. The black marker is District D37.

Adults with a bachelor's degree26% 8th pct · 37th of 40 in MA

Lower than 92% of seats.

White adults without a degree60% 100th pct · 1st of 40 in MA

Highest of 40 seats.

Hispanic residents9% 41st pct · 24th of 40 in MA

Lower than 59% of seats.

Black residents3% 36th pct · 26th of 40 in MA

Lower than 64% of seats.

Asian residents2% 18th pct · 33rd of 40 in MA

Lower than 82% of seats.

People per square mile635 26th pct · 30th of 40 in MA

Less dense than 74% 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 D36
32% college gradsR+2.3Held RDistrict D07
35% college gradsR+3.0Held RDistrict D06
36% college gradsD+2.0CountingDistrict D38
25% college gradsD+6.3Held 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. Michael J. Rodrigues (D)
    2023– · Won 2022 by 15.3, 2024 unopposed

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