2012Final results
2012 election for Massachusetts House District 178
Massachusetts House of Representatives · Massachusetts
Geoff Diehl (R) won with 54.2% of the vote, defeating Robert L. Toomey Jr. (D) by 8.5 points.
Geoff DiehlRepublican · winner · incumbent
54.2%10,942
Robert L. Toomey Jr.Democrat
45.8%9,232
20,174 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The seat over time
D − R margin in this seat's races around 2012
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET