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_ |
|---|---|---|---|---|---|
| 374 | Allyson Schwartz | D | PA-13 | January 3, 2005 |  |
| 375 | Debbie Wasserman Schultz | D | FL-20 | January 3, 2005 |  |
| 376 | Lynn Westmoreland | R | GA-03 | January 3, 2005 |  |
| 377 | Doris Matsui | D | CA-05 | March 10, 2005 |  |
| 378 | Jean Schmidt | R | OH-02 | August 3, 2005 |  |
| 379 | John Campbell | R | CA-48 | December 7, 2005 |  |
| 380 | Brian Bilbray | R | CA-50 | June 13, 2006 | Previously served from 1995 to 2001. |
| 381 | Albio Sires | D | NJ-13 | November 13, 2006 |  |
| 382 | Nick Lampson | D | TX-22 | January 4, 2007 | Previously served from 1997 to 2005. Left the House in 2009. |
| 383 | Ciro Rodriguez | D | TX-23 | January 4, 2007 | Previously served from 1997 to 2005. |