The United States Senate election of 1948 in Massachusetts was held on November 2, 1948, with Republican incumbent Leverett Saltonstall defeating his challengers.
Republican primary
Candidates
Leverett Saltonstall, incumbent Senator since 1945
Results
Senator Saltonstall was unopposed for renomination.
Democratic primary
Candidates
John I. Fitzgerald, former Boston Fire Commissioner and Boston City Councilor
Francis D. Harrigan, Boston attorney and candidate for Governor in 1946
Joseph A. Langone, Jr., Boston Election Commissioner and former State Senator
John D. Lynch, Cambridge City Councilor and former Mayor of Cambridge
Richard M. Russell, former U.S. Representative and Mayor of Cambridge
Results
General election
Candidates
Henning A. Blomen, perennial candidate (Socialist Labor) John I. Fitzgerald, former Boston Fire Commissioner and Boston City Councilor (Democratic) Leverett Saltonstall, incumbent Senator since 1945 (Republican) E. Tallmadge Root, candidate for Senator in 1944 and Governor of Massachusetts in 1940 (Prohibition)