# List of United States senators in the 35th Congress

This is a complete list of members of the United States Senate during the 35th United States Congress listed by seniority, from March 4, 1857, to March 3, 1859.
Order of service is based on the commencement of the senator's first term. Behind this is former service as a senator (only giving the senator seniority within his or her new incoming class), service as vice president, a House member, a cabinet secretary, or a governor of a state. The final factor is the population of the senator's state.
Senators who were sworn in during the middle of the Congress (up until the last senator who was not sworn in early after winning the November 1858 election) are listed at the end of the list with no number.

## Terms of service

| Class | Terms of service of senators that expired in years |
| Class 2 | Terms of service of senators that expired in 1859 (AL, AR, CO, DE, GA, IA, IL, KY, LA, MA, ME, MI, MN, MS, NC, NH, NJ, OR, RI, SC, TN, TX, and VA.) |
| Class 3 | Terms of service of senators that expired in 1861 (CA, CT, DE, FL, IN, MA, MD, ME, MI, MN, MO, MS, NJ, NY, OH, PA, RI, TN, TX, VA, VT, and WI.) |
| Class 1 | Terms of service of senators that expired in 1863 (AL, AR, CA, CT, FL, GA, IA, IL, IN, KY, LA, MD, MO, NC, NH, NY, OH, OR, PA, SC, VT, and WI.) |

## U.S. Senate seniority list

U.S. Senate seniority :
| Rank | Senator (party-state) | Seniority date |
| 1 | James Alfred Pearce (D-MD) | March 4, 1843 |
| 2 | Jesse D. Bright (D-IN) | March 4, 1845 |
| 3 | Thomas Jefferson Rusk (D-TX) | February 21, 1846 |
| 4 | Samuel Houston (D-TX) | February 26, 1846 |
| 5 | Andrew Pickens Butler (D-SC) | December 4, 1846 |
| 6 | James M. Mason (D-VA) | January 21, 1847 |
| 7 | Stephen A. Douglas (D-IL) | March 4, 1847 |
| 8 | Robert M. T. Hunter (D-VA) | March 4, 1847 |
| 9 | John Bell (D-TN) | November 22, 1847 |
| 10 | William K. Sebastian (D-AR) | May 12, 1848 |
| 11 | George Wallace Jones (D-IA) | December 7, 1848 |
| 12 | William H. Seward (R-NY) | March 4, 1849 |
| 13 | Solomon Foot (R-VT) | March 4, 1851 |
| 14 | James A. Bayard Jr. (D-DE) | March 4, 1851 |
| 15 | Stephen Mallory (D-FL) | March 4, 1851 |
| 16 | Benjamin Wade (R-OH) | March 15, 1851 |
| 17 | Charles Sumner (LR-MA) | April 11, 1851 |
| 18 | John R. Thomson (D-NJ) | March 4, 1853 |
| 19 | Robert Toombs (D-GA) | March 4, 1853 |
| 20 | Judah P. Benjamin (D-LA) | March 4, 1853 |
| 21 | Josiah J. Evans (D-SC) | March 4, 1853 |
| 21 | Charles E. Stuart (D-MI) | March 4, 1853 |
| 22 | William Wright (D-NJ) | March 4, 1853 |
| 23 | John B. Thompson (KN-KY) | March 4, 1853 |
| 24 | Robert Ward Johnson (D-AR) | July 6, 1853 |
| 25 | Philip Allen (D-RI) | July 20, 1853 |
| 26 | Clement Claiborne Clay (D-AL) | November 29, 1853 |
| 27 | John Slidell (D-LA) | December 5, 1853 |
| 28 | Albert G. Brown (D-MS) | January 7, 1854 |
| 29 | William P. Fessenden (R-ME) | February 10, 1854 |
| 30 | David Settle Reid (D-NC) | December 6, 1854 |
| 31 | Henry Wilson (R-MA) | January 31, 1855 |
| 32 | Lyman Trumbull (R-IL) | March 4, 1855 |
| 33 | Jacob Collamer (R-VT) | March 4, 1855 |
| 34 | Lafayette S. Foster (R-CT) | March 4, 1855 |
| 35 | David Levy Yulee (D-FL) | March 4, 1855 |
| 36 | Alfred Iverson, Sr. (D-GA) | March 4, 1855 |
| 37 | John Jordan Crittenden (KN-KY) | March 4, 1855 |
| 38 | George E. Pugh (D-OH) | March 4, 1855 |
| 39 | Charles Durkee (R-WI) | March 4, 1855 |
| 40 | Asa Biggs (D-NC) | March 4, 1855 |
| 41 | James Bell (R-NH) | March 4, 1855 |
| 42 | John P. Hale (R-NH) | July 30, 1855 |
| 43 | Benjamin Fitzpatrick (D-AL) | November 26, 1855 |
| 44 | William Bigler (D-PA) | January 14, 1856 |
| 45 | James S. Green (D-MO) | January 12, 1857 |
| 46 | William M. Gwin (D-CA) | January 13, 1857 |
| 47 | Martin W. Bates (D-DE) | January 14, 1857 |
| 48 | James Harlan (R-IA) | January 29, 1857 |
| 49 | Graham N. Fitch (D-IN) | February 4, 1857 |
| 50 | Zachariah Chandler (R-MI) | March 4, 1857 |
| 51 | James Dixon (R-CT) | March 4, 1857 |
| 52 | James R. Doolittle (R-WI) | March 4, 1857 |
| 53 | Anthony Kennedy (KN-MD) | March 4, 1857 |
| 54 | Trusten Polk (D-MO) | March 4, 1857 |
| 55 | Preston King (D-NY) | March 4, 1857 |
| 56 | James F. Simmons (R-RI) | March 4, 1857 |
| 57 | Hannibal Hamlin (R-ME) | March 4, 1857 |
| 58 | David C. Broderick (D-CA) | March 4, 1857 |
| 59 | Jefferson Davis (D-MS) | March 4, 1857 |
| 60 | Simon Cameron (R-PA) | March 4, 1857 |
| | Daniel Clark (R-NH) | June 27, 1857 |
| | Andrew Johnson (D-TN) | October 8, 1857 |
| | James Pinckney Henderson (D-TX) | November 9, 1857 |
| | James H. Hammond (D-SC) | December 7, 1857 |
| | Thomas Lanier Clingman (D-NC) | May 7, 1858 |
| | Henry Mower Rice (D-MN) | May 11, 1858 |
| | Arthur P. Hayne (D-SC) | May 11, 1858 |
| | James Shields (D-MN) | May 11, 1858 |
| | Matthias Ward (D-TX) | September 27, 1858 |
| | James Chesnut, Jr. (D-SC) | December 3, 1858 |
| | Joseph Lane (D-OR) | February 14, 1859 |
| | Delazon Smith (D-OR) | February 14, 1859 |