As of August 2014, Patrick Leahy is the longest currently serving Senator, having first been elected in 1974. Overall, Robert Byrd was the longest serving Senator, at 51 years.
senator david mark
The late Senator Mike Mansfield of Montana.
Robert Byrd
Strom Thurmond
Thomas Hart Benton
Robert Byrd He was the longest-serving senator and the longest-serving member in thehistory of .... The country needs young men like you in the leadership of thenation. ..... Let us defend the oldest
Barack Obama is a US senator.
Robert C. Byrd is the longest serving U.S. Senator.
Robert C. Byrd served as a U.S. Senator for 51 years. He was the longest-serving U.S. Senator in history.
June 28, 2010
Each state has 2 senators. The one who has been in office the longest is the senior senator.
He was 92. Born on November 20, 1917 and died June 28, 2010.