(D) . William Goode (D) . Thomas S. Bocock (D) . Paulus Powell (D) . William Smith (D) . Charles J. Faulkner (D) . John Letcher (D) . Zedekiah Kidwell (D) . John S. Carlile (A) . Henry A. Edmundson (D) . LaFayette McMullen (D) Wisconsin . Daniel Wells Jr. (D) . Cadwallader C. Washburn (O) . Charles Billinghurst (O) Non-voting members . John W. Whitfield (D), until August 1, 1856, and from December 9, 1856 . Henry M. Rice (D) . Bird B. Chapman (D) . José Manuel Gallegos (D), until July 23, 1856 Miguel A. Otero (D), from July 23, 1856 . Joseph Lane (D) . John M. Bernhisel . James P. Anderson (D) Changes in membership The count below reflects changes from the beginning of the first session of this Congress. Senate |- | nowrap | New Hampshire(2) | Vacant | Charles G. Atherton (D) died during the previous Congress.Jared W. Williams (D) was appointed November 29, 1853, to continue the term, but his term was deemed expired July 15, 1854, and the legislature failed to elect a successor.A successor was finally elected July 30, 1855. | nowrap | John Parker Hale (R) | July 30, 1855 |- | nowrap | New Hampshire(3) | Vacant | Legislature failed to elect on time.Successor was elected. | nowrap | James Bell (R) | July 30, 1855 |- | nowrap | Alabama(3) | Vacant | Legislature failed to elect on time.Incumbent was then re-elected November 26, 1855. | nowrap | Benjamin Fitzpatrick (D) | November 26, 1855 |- | nowrap | Pennsylvania(3) | Vacant | Legislature failed to elect on time.Successor elected January 14, 1856. | nowrap | William Bigler (D) | January 14, 1856 |- | nowrap | Missouri(3) | Vacant | Elected but took seat late on January 12, 1857. | nowrap | James S. Green (D) | January 12, 1857 |- | nowrap | California(3) | Vacant | Legislature failed to elect on time.Incumbent was then re-elected January 13, 1857. | nowrap | William M. Gwin (D) | January 13, 1857 |- | nowrap | Indiana(3) | Vacant | Legislature failed to elect on time.Senator elected February 4, 1857. | nowrap | Graham N. Fitch (D) | February 4, 1857 |- | nowrap | Delaware(2) | nowrap | John M. Clayton (W) | Died November 9, 1856.Successor was appointed. | nowrap | Joseph P. Comegys (W) |