Votes with DemocratsCrosses party linesVotes with Republicans
Mark Montigny's seat is marked. Seats run from most liberal (left) to most conservative (right), by contested floor votes. Color shows how often each member crosses party lines toward the middle on votes that divide the parties: solid blue or red means almost never, and purple means on at least 1 in 10 of those votes. Gray seats are members too new to score. How these numbers work
Massachusetts Senate87thpercentile
More conservative than 86% of the Massachusetts Senate.
Most liberalMost conservative
6th most conservative of 39
On the November 3 ballot
Running for Massachusetts Senate, Second Bristol and Plymouth District.
Also on the ballot:
Robert Scott McConnell (Republican)
Rank by bills passed: Rank 15 of 40 in the Senate (tied with 8 others) · 11 of 35 Democrats (tied with 7 others)
A bill's sponsor is its primary sponsor as the Legislature records it; co-sponsors aren't counted, and a bill a committee reported in a new draft counts for no one.
Bills that passed both chambers
Bills that passed both chambers: Mark Montigny
Bill
Result
Final action
S.2508 Establishing a sick leave bank for Andrew Setera, an employee of the trial court
Became law
June 11, 2025
Budget projects
Massachusetts's budget acts don't name the legislator who asked for an item, so there's no budget figure for Massachusetts legislators.
Contested votes where they split
19 against the Senate Majority Leader; 21 against most of their party.
Room 312C, State House 24 Beacon St., Boston, MA 02133 617-722-1440
District office
Room 304, 888 Purchase St., New Bedford, MA 02740 508-984-1474
Committees
Intergovernmental AffairsChair
Post Audit and OversightChair
Public ServiceVice chair
Census
Veterans and Federal Affairs
Contact details and committee assignments from Open States' data on the Massachusetts Legislature, which it collects from the chambers' websites, as of Oct. 15, 2026.
