This is a complete list of members of the United States Senate during the 59th United States Congress listed by seniority, from March 4, 1905, to March 3, 1907.
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. [1] [2] [3]
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 1906 election) are listed at the end of the list with no number.
| Class | Terms of service of senators that expired in years |
|---|---|
| Class 2 | Terms of service of senators that expired in 1907 [4] |
| Class 3 | Terms of service of senators that expired in 1909 [5] |
| Class 1 | Terms of service of senators that expired in 1911 [6] |
| Rank | Senator (party-state) | Seniority date | Other factors |
|---|---|---|---|
| 1 | William B. Allison (R-IA) | March 4, 1873 | Former representative |
| 2 | John Tyler Morgan (D-AL) | March 4, 1877 | |
| 3 | Orville H. Platt (R-CT) [7] | March 4, 1879 | |
| 4 | Eugene Hale (R-ME) | March 4, 1881 | Former representative |
| 5 | William P. Frye (R-ME) | March 18, 1881 | Former representative |
| 6 | Nelson Aldrich (R-RI) | October 5, 1881 | Former representative |
| 7 | Shelby Moore Cullom (R-IL) | March 4, 1883 | Former governor, Former representative |
| 8 | Henry M. Teller (D-CO) | March 4, 1885 | Previously a senator |
| 9 | James H. Berry (D-AR) [8] | March 20, 1885 | Former governor |
| 10 | John W. Daniel (D-VA) | March 4, 1887 | Former representative |
| 11 | William B. Bate (D-TN) [9] | Former governor | |
| 12 | Jacob H. Gallinger (R-NH) | March 4, 1891 | Former representative (4 years) |
| 13 | Henry C. Hansbrough (R-ND) | Former representative (2 years) | |
| 14 | Redfield Proctor (R-VT) | November 2, 1891 | Former governor |
| 15 | Henry Cabot Lodge (R-MA) | March 4, 1893 | Former representative |
| 16 | George C. Perkins (R-CA) | July 26, 1893 | Former governor |
| 17 | Julius C. Burrows (R-MI) | January 23, 1895 | Former representative |
| 18 | Clarence D. Clark (R-WY) | January 24, 1895 | |
| 19 | Francis E. Warren (R-WY) | March 4, 1895 | Previously a senator |
| 20 | Stephen Elkins (R-WV) | Former delegate, former cabinet member | |
| 21 | Knute Nelson (R-MN) | Former governor, Minnesota 20th in population (1890) | |
| 22 | Benjamin Tillman (D-SC) | Former governor, South Carolina 23rd in population (1890) | |
| 23 | George P. Wetmore (R-RI) | Former governor, Rhode Island 36th in population (1890) | |
| 24 | Augustus O. Bacon (D-GA) | Georgia 12th in population (1890) | |
| 25 | Thomas S. Martin (D-VA) | Virginia 15th in population (1890) | |
| 26 | John C. Spooner (R-WI) | March 4, 1897 | Previously a senator (6 years) |
| 27 | Thomas C. Platt (R-NY) | Previously a senator (2 months) | |
| 28 | Joseph Foraker (R-OH) | Former governor, Ohio 4th in population (1890) | |
| 29 | Samuel McEnery (D-LA) | Former governor, Louisiana 25th in population (1890) | |
| 30 | Boies Penrose (R-PA) | Pennsylvania 2nd in population (1890) | |
| 31 | Alexander Clay (D-GA) | Georgia 12th in population (1890) | |
| 32 | Edmund Pettus (D-AL) | Alabama 17th in population (1890) | |
| 33 | Stephen Mallory (D-FL) | May 15, 1897 | Former representative |
| 34 | Hernando Money (D-MS) | October 8, 1897 | Former representative |
| 35 | John Kean (R-NJ) | March 4, 1899 | Former representative |
| 36 | Charles A. Culberson (D-TX) | Former governor | |
| 37 | Chauncey Depew (R-NY) | New York 1st in population (1890) | |
| 38 | Albert J. Beveridge (R-IN) | Indiana 8th in population (1890) | |
| 39 | Nathan B. Scott (R-WV) | West Virginia 28th in population (1890) | |
| 40 | Porter McCumber (R-ND) | North Dakota 41st in population (1890) | |
| 41 | James Taliaferro (D-FL) | April 20, 1899 | |
| 42 | Jonathan P. Dolliver (R-IA) | August 22, 1900 | Former representative |
| 43 | William P. Dillingham (R-VT) | October 18, 1900 | Former governor |
| 44 | Moses Clapp (R-MN) | January 23, 1901 | |
| 45 | John H. Mitchell (R-OR) [10] | March 4, 1901 | Previously a senator (18 years) |
| 46 | Joseph C. S. Blackburn (D-KY) [8] | Previously a senator (12 years) | |
| 47 | Fred Dubois (D-ID) [8] | Previously a senator (6 years) | |
| 48 | William A. Clark (D-MT) [8] | Previously a senator (1 year, 2 months) | |
| 49 | Anselm J. McLaurin (D-MS) | Previously a senator (1 year, 1 month) | |
| 50 | Joseph W. Bailey (D-TX) | Former representative (10 years) | |
| 51 | Edward W. Carmack (D-TN) [8] | Former representative (4 years), Tennessee 13th in population (1890) | |
| 52 | Robert J. Gamble (R-SD) | Former representative (4 years), South Dakota 35th in population (1890) | |
| 53 | Furnifold M. Simmons (D-NC) | Former representative (2 years), North Carolina 16th in population (1890) | |
| 54 | Thomas Patterson (D-CO) [8] | Former representative (2 years), Colorado 31st in population (1890) | |
| 55 | Murphy J. Foster (D-LA) | Former governor | |
| 56 | Joseph Burton (R-KS) [11] | Kansas 19th in population (1890) | |
| 57 | Henry E. Burnham (R-NH) | New Hampshire 33rd in population (1890) | |
| 58 | Joseph Millard (R-NE) [8] | March 28, 1901 | |
| 59 | Alfred B. Kittredge (R-SD) | July 1, 1901 | |
| 60 | John F. Dryden (R-NJ) [8] | January 29, 1902 | |
| 61 | Russell A. Alger (R-MI) [12] | September 27, 1902 | |
| 62 | Frank Allee (R-DE) [8] | March 2, 1903 | |
| 63 | Arthur P. Gorman (R-MD) [13] | March 4, 1903 | Previously a senator |
| 64 | Albert J. Hopkins (R-IL) | Former representative (18 years) | |
| 65 | James B. McCreary (D-KY) | Former representative (12 years) | |
| 66 | Asbury Latimer (D-SC) | Former representative (10 years), South Carolina 24th in population (1900) | |
| 67 | Francis Newlands (D-NV) | Former representative (10 years), Nevada 46th in population (1900) | |
| 68 | Chester Long (R-KS) | Former representative (6 years) | |
| 69 | William J. Stone (D-MO) | Former governor, Missouri 5th in population (1900) | |
| 70 | James P. Clarke (D-AR) | Former governor, Arkansas 25th in population (1900) | |
| 71 | Lee S. Overman (D-NC) | North Carolina 15th in population (1900) | |
| 72 | Levi Ankeny (R-WA) | Washington 34th in population (1900) | |
| 73 | Charles W. Fulton (R-OR) | Oregon 36th in population (1900) | |
| 74 | Reed Smoot (R-UT) | Utah 41st in population (1900) | |
| 75 | Weldon B. Heyburn (R-ID) | Idaho 44th in population (1900) | |
| 76 | Charles Dick (R-OH) | March 23, 1904 | Former representative |
| 77 | Philander C. Knox (R-PA) | June 10, 1904 | |
| 78 | Winthrop M. Crane (R-MA) | October 12, 1904 | Former governor |
| 79 | Thomas Carter (R-MT) | March 4, 1905 | Previously a senator |
| 80 | James Hemenway (R-IN) | Former representative (10 years) | |
| 81 | Isidor Rayner (D-MD) | Former representative (6 years), Maryland 26th in population (1900) | |
| 82 | Elmer Burkett (R-NE) | Former representative (6 years), Nebraska 27th in population (1900) | |
| 83 | George Sutherland (R-UT) | Former representative (2 years) | |
| 84 | Morgan Bulkeley (R-CT) | Former governor | |
| 85 | Frank P. Flint (R-CA) | California 21st in population (1900) | |
| 86 | Samuel H. Piles (R-WA) | Washington 34th in population (1900) | |
| 87 | George S. Nixon (R-NV) | Nevada 46th in population (1900) | |
| 88 | William Warner (R-MO) | March 18, 1905 | Former representative |
| James B. Frazier (D-TN) | March 21, 1905 | ||
| Frank B. Brandegee (R-CT) | May 10, 1905 | ||
| John M. Gearin (D-OR) [14] | December 13, 1905 | ||
| 89 | Robert M. La Follette, Sr. (R-WI) | January 4, 1906 | Former representative, Former governor |
| William Pinkney Whyte (D-MD) | June 8, 1906 | Former governor, Previously a senator (twice) | |
| Alfred Benson (R-KS) [15] | June 11, 1906 | ||
| 90 | Henry du Pont (R-DE) | June 13, 1906 | |
| Frederick Mulkey (R-OR) [8] | January 23, 1907 | ||
| Charles Curtis (R-KS) | January 29, 1907 | Former representative | |
| William A. Smith (R-MI) | February 9, 1907 | ||