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

| Total_tenure_rank | Uninterrupted_rank | Name_ | Party_affiliation | Total_tenure_time | Uninterrupted_time |
|---|---|---|---|---|---|
| 29 | 25 | William R. Poage (H) | Democratic Party | 42 years, 0 days | 42 years, 0 days |
| 30 | 26 | Jack Brooks (H) | Democratic Party | 42 years, 0 days | 42 years, 0 days |
| 31 | 27 | Robert L. Doughton (H) | Democratic Party | 41 years, 305 days | 41 years, 305 days |
| 32 | 28 | Joseph William Martin, Jr. (H) | Republican Party | 41 years, 305 days | 41 years, 305 days |
| 33 | 29 | Dave Obey (H) | Democratic Party | 41 years, 276 days | 41 years, 276 days |
| 34 | 30 | Clarence Cannon (H) | Democratic Party | 41 years, 69 days | 41 years, 69 days |
| 35 | 31 | John C. Stennis (S) | Democratic Party | 41 years, 59 days | 41 years, 59 days |