List of United States senators in the 66th Congress
Introduction This is a '''complete list of members of the United States Senate during the 66th United States Congress''' listed by seniority, from March 4, 1919, to March 3, 1921.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 1920 election) are listed at the end of the list with no number.
Terms of service ClassTerms of service of senators that expired in yearsClass 3Terms of service of senators that expired in 1921Class 1Terms of service of senators that expired in 1923Class 2Terms of service of senators that expired in 1925
U.S. Senate seniority list +U.S. Senate seniority Rank  Senator (party-state)  Seniority date  Other factors 1  Henry Cabot Lodge (R-MA)  March 4, 1893  Former representative  2  Francis E. Warren (R-WY)  March 4, 1895  Previously a senator 3  Knute Nelson (R-MN)  Former governor 4  Thomas S. Martin (D-VA)  5  Boies Penrose (R-PA)  March 4, 1897 6  Charles A. Culberson (D-TX)  March 4, 1899  Former governor 7  Porter McCumber (R-ND)   8  William P. Dillingham (R-VT)  October 18, 1900  Former governor 9  Furnifold M. Simmons (D-NC)  March 4, 1901  Former representative  10  Lee S. Overman (D-NC)  March 4, 1903  North Carolina 15th in population (1900) 11  Reed Smoot (R-UT)  Utah 41st in population (1900) 12  Frank B. Brandegee (R-CT)  May 10, 1905  Former representative  13  Robert M. La Follette, Sr. (R-WI)  January 4, 1906  Former governor, Former representative  14  William Borah (R-ID)  March 4, 1907 15  John H. Bankhead (D-AL)  June 18, 1907  Former representative  16  Thomas Gore (D-OK)  December 11, 1907 17  Robert Owen (D-OK) 18  John Walter Smith (D-MD)  March 25, 1908  Former governor, Former representative  19  Carroll S. Page (R-VT)  October 21, 1908  Former governor  20  Albert B. Cummins  (R-IA)  November 24, 1908  Former governor 21  Wesley Jones (R-WA)  March 4, 1909  Former representative 22  Ellison D. Smith (D-SC)  South Carolina 24th in population (1900) 23  Duncan U. Fletcher (D-FL)  Florida 33rd in population (1900) 24  George Chamberlain (D-OR)  Oregon 36th in population (1900) 25  Claude A. Swanson (D-VA)  August 1, 1910  Former representative, Former governor 26  Asle Gronna (R-ND)  February 2, 1911 27  John S. Williams (D-MS)  March 4, 1911  Former representative (16 years) 28  Charles Townsend (R-MI)  Former representative (8 years) 29  Gilbert Hitchcock (D-NE)  Former representative (6 years) 30  Miles Poindexter (R-WA)  Former representative (2 years) 31  George P. McLean (R-CT)  Former governor 32  Atlee Pomerene (D-OH)  Ohio 4th in population (1910) 33  James A. Reed (D-MO)  Missouri 7th in population (1910) 34  Henry L. Myers (D-MT)  Montana 40th in population (1910) 35  William S. Kenyon (R-IA)  April 12, 1911  36  Hoke Smith (D-GA)  November 16, 1911 37  Marcus A. Smith (D-AZ)  April 2, 1912  Former delegate 38  Albert B. Fall (R-NM)  New Mexico 43rd in population (1910) 39  Henry F. Ashurst (D-AZ)  Arizona 45th in population (1910) 40  Charles Thomas (D-CO)  January 15, 1913  41  Key Pittman (D-NV)  January 29, 1913 42  Morris Sheppard (D-TX)  February 3, 1913  Former governor 43  Joseph E. Ransdell (D-LA)  March 4, 1913  Former representative (14 years) 44  Joseph Robinson (R-AR)  Former representative (10 years), former governor 45  George W. Norris (R-NE)  Former representative (10 years) 46  John Shields (D-TN)  Tennessee 17th in population (1910) 47  Thomas Sterling (R-SD)  South Dakota 36th in population (1910) 48  LeBaron Colt (R-RI)  Rhode Island 38th in population (1910) 49  Thomas J. Walsh (D-MT)  Montana 40th in population (1910) 50  Lawrence Sherman (R-IL)  March 26, 1913  51  Charles Curtis (R-KS)  March 4, 1915  Former representative, Previously a senator 52  Oscar Underwood (D-AL)  Former representative 53  John C. W. Beckham (D-KY)  Former governor 54  James Wadsworth, Jr. (R-NY)  New York 1st in population (1910) 55  Warren G. Harding (R-OH)  Ohio 4th in population (1910) 56  James D. Phelan (D-CA)  California 12th in population (1910) 57  Edwin S. Johnson (D-SD)  South Dakota 36th in population (1910) 58  Bert Fernald (R-ME)  September 12, 1916  Former governor 59  James Watson (R-IN)  November 8, 1916  Former representative 60  William F. Kirby (D-AR)  61  Philander C. Knox (R-PA)  March 4, 1917  Previously a senator 62  William M. Calder (R-NY)  Former representative (10 years) 63  Kenneth McKellar (D-TN)  Former representative (6 years) 64  Howard Sutherland (R-WV)  Former representative (4 years) 65  William H. King (D-UT)  Former representative (3 years) 66  Peter G. Gerry (D-RI)  Former representative (2 years) 67  Park Trammell (D-FL)  Former governor, Florida 33rd in population (1910) 68  John B. Kendrick (D-WY)  Former governor, Wyoming 47th in population (1910) 69  Harry S. New (R-IN)  Indiana 9th in population (1910) 70  Joseph S. Frelinghuysen (R-NJ)  New Jersey 11th in population (1910) 71  Frank B. Kellogg (R-MN)  Minnesota 19th in population (1910) 72  Joseph I. France (R-MD)  Maryland 27th in population (1910) 73  Frederick Hale (R-ME)  Maine 34th in population (1910) 74  Andrieus Jones (R-NM)  New Mexico 43rd in population (1910) 75  Josiah Wolcott (D-DE)  Delaware 46th in population (1910) 76  Hiram Johnson (R-CA)  March 16, 1917  77  Charles Henderson (D-NV)  January 12, 1918 78  John F. Nugent (D-ID)  January 22, 1918 79  Irvine Lenroot (R-WI)  April 18, 1918  80  Selden P. Spencer (R-MO)  November 6, 1918  Missouri 7th in population (1910) 81  Edward J. Gay (D-LA)  Louisiana 24th in population (1910) 82  George H. Moses (R-NH)  New Hampshire 39th in population (1910) 83  Charles L. McNary (R-OR)  December 18, 1918  Previously a senator  84  Heisler Ball (R-DE)  March 4, 1919  Previously a senator (2 years) 85  Davis Elkins (R-WV)  Previously a senator (1 year) 86  Medill McCormick (R-IL)  Former representative (2 years) 87  Truman Newberry (R-MI)  Former cabinet member 88  David I. Walsh (D-MA)  Former governor, Massachusetts 6th in population (1910) 89  Arthur Capper (R-KS)  Former governor, Kansas 22nd in population (1910) 90  Henry W. Keyes (R-NH)  Former governor, New Hampshire 39th in population (1910) 91  William J. Harris (D-GA)  Georgia 10th in population (1910) 92  Nathaniel Dial (D-SC)  South Carolina 26th in population (1910) 93  Lawrence C. Phipps (R-CO)  Colorado 32nd in population (1910)     Pat Harrison (D-MS)  March 5, 1919  Former representative (8 years)     Augustus O. Stanley (D-KY)  May 19, 1919  Former representative (12 years)     Walter E. Edge (R-NJ)  Former governor, New Jersey 11th in population (1910)     Carter Glass (D-VA)  February 2, 1920      B. B. Comer (D-AL)  March 5, 1920     James Thomas Heflin (D-AL)  November 2, 1920     Frank B. Willis (R-OH)  January 14, 1921     Frank R. Gooding (R-ID)  January 15, 1921
See also *66th United States Congress*List of members of the United States House of Representatives in the 66th Congress by seniority
Notes
External links * Senate Seniority List