Thomas Hart Benton
senator david mark
Robert Byrd
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.
Strom Thurmond
The late Senator Mike Mansfield of Montana.
Robert C. Byrd is the longest serving U.S. Senator.
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
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
Missouri's senior U.S. Senator is Democrat Claire McCaskill, who assumed office in January 2007 and is currently serving her 2nd term, which ends in January 2019.Missouri's junior U.S. Senator is Republican Roy Blunt, who assumed office in January 2011 and is currently serving his 1st term, which ends in January 2017.
Thomas Benton was the Missouri senator during Manifest Destiny.
As many times as his constituents want to re-elect him. The longest serving senator Robert Byrd had been elected to the senate 9 times and served 51 years 176 days. Patrick Leahy is presently the longest sitting Senator, elected 7 times and serving over 37 years to date, replacing Daniel Inouye of Hawaii (recently deceased) as the longest sitting senator, who had been elected 9 times and served almost 50 years.