2020Final results
2020 election for Massachusetts Senate District 39
Massachusetts State Senate · Massachusetts
Susan Lynn Moran (D) won with 56.3% of the vote, defeating James R. McMahon III (R) by 12.6 points.
Susan Lynn MoranDemocrat · winner
56.3%56,962
James R. McMahon IIIRepublican
43.7%44,201
101,233 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET
The seat over time
D − R margin in this seat's races around 2020
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET