99chambers

Massachusetts State Senate seat · lines in effect since 2022

Massachusetts State Senate: Berkshire-Hampden-Franklin-Hampshire District

A district of about 170,000 people, 41% of adults with a bachelor's degree. It votes D+36.1 relative to the nation for president.

Paul Mark (D) · since Nov 8, 2022Next 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+36.113th most
Democratic
Most DemocraticMost Republican21st seat · the majority lineDistrict D01

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
Massachusetts State SenateD+41.9

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 D01.

Adults with a bachelor's degree41% 33rd pct · 27th of 40 in MA

Lower than 67% of seats.

White adults without a degree53% 87th pct · 6th of 40 in MA

Higher than 87% of seats.

Hispanic residents5% 15th pct · 34th of 40 in MA

Lower than 85% of seats.

Black residents2% 13th pct · 35th of 40 in MA

Lower than 87% of seats.

Asian residents2% 15th pct · 34th of 40 in MA

Lower than 85% of seats.

People per square mile101 3rd pct · 39th of 40 in MA

Less dense than 97% 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 D40
49% college gradsD+29.1Held DDistrict D05
46% college gradsD+45.1Held DDistrict D21
57% college gradsD+24.3Held RDistrict D31
57% college gradsD+20.6Held R

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. Paul W. Mark (D)
    2023– · Won 2022 by 52.7, 2024 by 41.9, 2026 unopposed

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