|Elections in Massachusetts|
The 1966 Massachusetts gubernatorial election was held on November 8, 1966. Governor John A. Volpe was reelected to a four-year term.  He defeated former Attorney General Edward J. McCormack, Jr. in the general election.  This was the first election held since Governor's Term of office was extended from two to four years.
- 1 Republican primary
- 2 Democratic primary
- 3 General election
- 4 References
- John Volpe, incumbent Governor
Governor Volpe was unopposed for renomination.
- Francis Sargent, Commissioner of Public Works
- Elliot Richardson, incumbent Lieutenant Governor (running for Attorney General)
Francis Sargent was unopposed for the nomination.
- Edward J. McCormack, Jr., former Massachusetts Attorney General
- Kenneth O'Donnell, former aide to President Kennedy
|Democratic||Edward J. McCormack, Jr.||343,381||55.12%|
|Democratic||Joseph E. McGuire||32,842||54.82%|
|Democratic||Herbert L. Connolly||27,063||45.17%|
Volpe defeated McCormack by over a half million votes. He won the majority of the votes in every Massachusetts county. 
|Republican||John A. Volpe||1,277,358||62.58%|
|Democratic||Edward J. McCormack, Jr.||752,720||36.88%|
|Socialist Labor||Henning A. Blomen||6,539||0.32%|
|Prohibition||John C. Hedges||4,494||0.22%|
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.
|Republican||Francis W. Sargent||1,059,846||54.58%|
|Democratic||Joseph E. McGuire||859,907||44.28%|
|Socialist Labor||Francis A. Votano||14,822||0.76%|
|Prohibition||Grace F. Luder||7,202||0.37%|
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