1946 United States Senate election in Massachusetts
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Lodge: 40–50% 50–60% 60–70% 70–80% 80–90% 90–100% Walsh: 50–60% 60–70% | |||||||||||||||||
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The 1946 United States Senate election in Massachusetts was held on November 5, 1946. Incumbent Democratic Senator David I. Walsh ran for re-election to a fifth term in office, but was defeated by Republican former Senator Henry Cabot Lodge Jr., who returned from service in World War II.
A Republican would not hold this Senate seat until Scott Brown, who was elected to serve a partial term in 2010. As of 2023, this remains the last time that a Republican has won a full term in this seat.