2020Final results
2020 election for Massachusetts House District 159
Massachusetts House of Representatives · Massachusetts
Ron Mariano (D) won with 68.3% of the vote, defeating Stephen F. Tougas (R) by 36.8 points.
Ron MarianoDemocrat · winner · incumbent
68.3%14,177
Stephen F. TougasRepublican
31.5%6,534
20,754 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