Massachusetts’ post-2020 congressional redistricting was a legislature-led process run through the General Court’s Special Joint Committee on Redistricting, which held a series of regional and language-access public hearings in 2021 to collect testimony about communities of interest and proposed district changes. Read the committee's final report here. The committee then advanced H. 4256, the congressional redistricting bill, which the House and Senate passed on November 17, 2021, and Gov. Charlie Baker signed on November 22, 2021, as Chapter 93 of the Acts of 2021. With Massachusetts retaining nine congressional seats and experiencing comparatively modest population shifts, the enacted plan made relatively limited adjustments rather than wholesale restructuring.

The post-2020 state legislative redistricting process followed the same committee-driven legislative pathway, but with separate bills for the House and Senate maps. The Legislature passed new state House and state Senate district plans in late October 2021, and Gov. Baker signed the state House plan as Chapter 83 of the Acts of 2021 on November 4, 2021, with the legislative districts taking effect for the 2022 elections. As with the congressional plan, the Special Joint Committee served as the primary venue for drafting, hearings, and map development, while final authority rested with the full Legislature and the governor’s signature.

last updated: Jan 2026