In the race for Governor, incumbent Republican governor John Volpe defeated Democratic challenger Edward J. McCormack Jr. Overall, Republicans won three of the six elected state-wide offices. Incumbents were re-elected in four races.
This was the first election in which the term of office for all state officers was extended from two to four years.
Francis W. Sargent defeated Joseph E. McGuire by 199,939 votes. It was the last general election in which the Governor and Lt. Governor were elected separately.
As of 2024, this is the last time a Republican was elected Attorney General of Massachusetts and Richardson remains the last Republican to serve in the office.
Democratic primary
Candidates
Francis X. Bellotti, former Lieutenant Governor (1963–65) and nominee for Governor in 1964
Incumbent Secretary of the CommonwealthKevin White, defeated Republican Raymond Trudel, Socialist Labor candidate Willy N. Hogseth, and Prohibition candidate F. Oliver Drake in the general election.
General election
Results
Massachusetts Secretary of the Commonwealth Election, 1966[5]
Incumbent Treasurer and Receiver-GeneralRobert Q. Crane defeated Republican Joseph Fernandes, Socialist Labor candidate Domenico DiGirolamo, and Prohibition candidate Julia Kohler in the general election.
General election
Results
Massachusetts Treasurer and Receiver-General Election, 1966[6]
In the general election, Buczko defeated Republican John J. Buckley, Socialist Labor candidate August Johnson, and Prohibition candidate Roger I. Williams in the general election.