What States Have the Longest-Serving Senators?
Smart Politics finds that the senators from Hawaii (68.2 years) and Iowa (56.2 years) are far and away the most seasoned in the 100-member body.
In fact, Sen. Daniel Inouye (D-HI) has notched a longer tenure in the Senate (48.1 years) than the combined service from both delegation members of every single state in the nation with the exception of Iowa.
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