| Election Name: | 1966 Massachusetts general election |
| Type: | parliamentary |
| Country: | Massachusetts |
| Previous Election: | 1964 Massachusetts general election |
| Previous Year: | 1964 |
| Next Election: | 1968 Massachusetts general election |
| Next Year: | 1968 |
| Election Date: | November 8, 1966 |
| Seats For Election: | Part of the 1966 United States elections |
The 1966 Massachusetts general election was held on November 8, 1966, throughout Massachusetts. Primary elections took place on September 13.
At the federal level, Republican Edward Brooke was elected to the United States Senate over Democrat Endicott Peabody and Democrats won seven of twelve seats in the United States House of Representatives. Former Speaker of the House Joseph W. Martin Jr. was the only incumbent not re-elected, after his defeat in the Republican primary against Margaret Heckler.
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.
See main article: 1966 Massachusetts gubernatorial election. Republican John A. Volpe was re-elected over Democrat Edward J. McCormack, Jr., Socialist Labor candidate Henning A. Blomen, and Prohibition candidate John C. Hedges.
| Election Name: | 1966 Massachusetts Lieutenant Governor election |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1964 Massachusetts elections#Attorney General |
| Previous Year: | 1964 |
| Next Election: | 1970 Massachusetts gubernatorial election |
| Next Year: | 1970 |
| Nominee1: | Francis Sargent |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 1,059,846 |
| Percentage1: | 54.6% |
| Nominee2: | Joseph E. McGuire |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 859,907 |
| Percentage2: | 44.3% |
| Map Size: | 250px |
| Lieutenant Governor | |
| Before Election: | Elliot Richardson |
| Before Party: | Republican Party (United States) |
| After Election: | Francis Sargent |
| After Party: | Republican Party (United States) |
Lt. Governor Elliott Richardson did not run for re-election. Republican Francis W. Sargent was elected Lieutenant Governor over Democrat Joseph E. McGuire.
Francis Sargent was unopposed for the nomination.
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.
| Election Name: | 1966 Massachusetts Attorney General election |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1964 Massachusetts elections#Attorney General |
| Previous Year: | 1964 |
| Next Election: | 1970 Massachusetts elections#Attorney General |
| Next Year: | 1970 |
| Nominee1: | Elliot Richardson |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 1,036,739 |
| Percentage1: | 51.8% |
| Nominee2: | Francis Bellotti |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 946,219 |
| Percentage2: | 47.3% |
| Map Size: | 250px |
| Attorney General | |
| Before Election: | Edward Brooke |
| Before Party: | Republican Party (United States) |
| After Election: | Elliott Richardson |
| After Party: | Republican Party (United States) |
Incumbent Attorney General Edward Brooke did not run for re-election.
Republican Lt. Governor Elliot Richardson defeated former Democrat Lt. Governor Francis X. Bellotti to win the open race.
As of, this is the last time a Republican was elected Attorney General of Massachusetts and Richardson remains the last Republican to serve in the office.
| Election Name: | 1966 Massachusetts Secretary of the Commonwealth election |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1964 Massachusetts elections#Secretary of the Commonwealth |
| Previous Year: | 1964 |
| Next Election: | 1970 Massachusetts elections#Secretary of the Commonwealth |
| Next Year: | 1970 |
| Nominee1: | Kevin White |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 1,357,131 |
| Percentage1: | 70.0% |
| Nominee2: | Raymond Trudel |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 562,708 |
| Percentage2: | 29.0% |
| Map Size: | 250px |
| Secretary of the Commonwealth | |
| Before Election: | Kevin White |
| Before Party: | Democratic Party (United States) |
| After Election: | Kevin White |
| After Party: | Democratic Party (United States) |
Incumbent Secretary of the Commonwealth Kevin White, defeated Republican Raymond Trudel, Socialist Labor candidate Willy N. Hogseth, and Prohibition candidate F. Oliver Drake in the general election.
| Election Name: | 1966 Massachusetts Treasurer election |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1964 Massachusetts elections#Treasurer and Receiver-General |
| Previous Year: | 1964 |
| Next Election: | 1970 Massachusetts elections#Treasurer and Receiver-General |
| Next Year: | 1970 |
| Nominee1: | Robert Q. Crane |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 1,197,981 |
| Percentage1: | 62.5% |
| Nominee2: | Joseph Fernandes |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 689,367 |
| Percentage2: | 36.0% |
| Map Size: | 250px |
| Treasurer and Receiver-General | |
| Before Election: | Robert Q. Crane |
| Before Party: | Democratic Party (United States) |
| After Election: | Robert Q. Crane |
| After Party: | Democratic Party (United States) |
Incumbent Treasurer and Receiver-General Robert Q. Crane defeated Republican Joseph Fernandes, Socialist Labor candidate Domenico DiGirolamo, and Prohibition candidate Julia Kohler in the general election.
| Election Name: | 1970 Massachusetts Auditor election |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1966 Massachusetts elections#Auditor |
| Previous Year: | 1966 |
| Next Election: | 1974 Massachusetts elections#Auditor |
| Next Year: | 1974 |
| Nominee1: | Thaddeus Buczko |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 1,102,844 |
| Percentage1: | 57.1% |
| Nominee2: | John J. Buckley |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 808,584 |
| Percentage2: | 41.5% |
| Map Size: | 250px |
| Auditor | |
| Before Election: | Thaddeus M. Buczko |
| Before Party: | Democratic Party (United States) |
| After Election: | Thaddeus M. Buczko |
| After Party: | Democratic Party (United States) |
Incumbent Auditor Thaddeus M. Buczko defeated state representative James H. Kelly in the Democratic primary.
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.
See main article: 1966 United States Senate election in Massachusetts. Republican Edward Brooke was elected over Democrat Endicott Peabody, Socialist Labor candidate Lawrence Gilfedder, and Prohibition candidate Mark R. Shaw.