1970 United States Senate election in Maryland

The 1970 United States Senate election in Maryland took place on November 3, 1970. Incumbent Democratic U.S. Senator Joseph Tydings ran for re-election to a second term, but was defeated by Republican U.S. Representative J. Glenn Beall Jr.

1970 United States Senate election in Maryland

November 3, 1970

Nominee J. Glenn Beall Jr. Joseph Tydings Party Republican Democratic Popular vote 484,960 460,422 Percentage 50.71% 48.14%

County results Beall:      50–60%      60–70%      70–80% Tydings:      50–60%      60–70%

U.S. senator before election Joseph Tydings Democratic Elected U.S. Senator J. Glenn Beall Jr. Republican

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Tydings had defeated Beall's father, Senator James Glenn Beall six years earlier. Tydings's own adoptive father Millard had served as Senator alongside Beall Sr., making this a rare dynastic election between the sons of former Senators. As of 2021, this is the last time the Republicans won the Class 1 Senate seat in Maryland.