1966 Massachusetts U.S. Senate Election

Massachusetts · 4 candidates · See every 1966 U.S. Senate race

Who won the 1966 Massachusetts U.S. Senate Election?

Edward W. Brooke won the 1966 Massachusetts U.S. Senate Election. Edward W. Brooke received 1,213,473 popular votes (60.68%). The main challenger was Endicott Peabody (38.74%).

See the full head-to-head between Brooke and Peabody

Brooke +21.9 pts · won by 438,712 votes

Edward W. Brooke RepublicanWINNER60.68%

1,213,473 votes

Endicott Peabody Democratic38.74%

774,761 votes

Lawrence M. GilfedderSocialist Labor0.34%

6,790 votes

Mark R. ShawProhibition0.24%

4,833 votes

Popular-vote totals for this U.S. Senate election come from the Constituency-Level Elections Archive (CLEA) and the official public record.

Data last verified July 28, 2026.