2018Final results
2018 election for Massachusetts Senate District 12
Massachusetts State Senate · Massachusetts
Ryan Fattman (R) won with 57.9% of the vote, defeating Thomas M. Merolli (D) by 15.9 points.
Ryan FattmanRepublican · winner · incumbent
57.9%37,513
Thomas M. MerolliDemocrat
42.0%27,195
64,779 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET