List of members of the United States Congress by longevity of service Senate time Senate time

| Total_tenure_rank | Uninterrupted_rank | Name_ | State_represented | Total_tenure_time | Uninterrupted_time |
|---|---|---|---|---|---|
| 8 | 8 | Patrick Leahy | Vermont | 39years, 29days | 39years, 29days |
| 9 | 9 | Ernest Hollings | South Carolina | 38 years, 55 days | 38 years, 55 days |
| 10 | 10 | Richard Russell, Jr. | Georgia | 38 years, 9 days | 38 years, 9 days |
| 11 | 11 | Russell B. Long | Louisiana | 38 years, 3 days | 38 years, 3 days |
| 12 | 999 | Francis E. Warren (I) | Wyoming | 37 years, 6 days | n/a |
| 13 | 12 | Orrin Hatch | Utah | 37years, 29days | 37years, 29days |
| 14 | 999 | James Eastland (I) | Mississippi | 36 years, 83 days | n/a |
| 15 | 13 | Warren Magnuson | Washington | 36 years, 20 days | 36 years, 20 days |
| 16 | 14 | Joe Biden | Delaware | 36 years, 12 days | 36 years, 12 days |