List of United States Representatives in the 110th Congress by seniority U.S. House seniority list U.S. House seniority

| Rank_ | Representative | Party | District | Seniority_date | Notes_ |
|---|---|---|---|---|---|
| 384 | Baron Hill | D | IN-9 | January 4, 2007 | Previously served from 1999 to 2005. |
| 385 | Jason Altmire | D | PA-04 | January 4, 2007 |  |
| 386 | Michael Arcuri | D | NY-24 | January 4, 2007 |  |
| 387 | Michele Bachmann | R | MN-6 | January 4, 2007 |  |
| 388 | Gus Bilirakis | R | FL-09 | January 4, 2007 |  |
| 389 | Nancy Boyda | D | KS-2 | January 4, 2007 | Left the House in 2009. |
| 390 | Bruce Braley | D | IA-1 | January 4, 2007 |  |
| 391 | Vern Buchanan | R | FL-13 | January 4, 2007 |  |
| 392 | Chris Carney | D | PA-10 | January 4, 2007 |  |
| 393 | Kathy Castor | D | FL-11 | January 4, 2007 |  |
| 394 | Yvette D. Clarke | D | NY-11 | January 4, 2007 |  |
| 395 | Steve Cohen | D | TN-9 | January 4, 2007 |  |