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Senate Seniority

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Senate Seniority List: 117th Congress

Source: http://www.senate.gov/artandhistory/history/resources/pdf/chronlist.pdf

Senate rank is first determined by the length of consecutive service in the Senate. For senators who entered the Senate on the same day, several tie-breaking procedures determine seniority. In order of precedence, these factors are: previous Senate service, service as the vice president, previous House service; service in the Cabinet, service as a state governor. If a tie still exists, senators are ranked according to the population of their state at the time of swearing in.

 

Rank All 100 Senators Date Service Began
1 Patrick J. Leahy, D-VT Jan. 3, 1975
2 Charles E. Grassley, R-IA Jan. 3, 1981
3 Mitch McConnell, R-KY Jan. 3, 1985
4 Richard C. Shelby, R-AL Jan. 3, 1987
5 Dianne Feinstein, D-CA Nov. 4, 1992
6 Patty Murray, D-WA Jan. 3, 1993
7 James M. Inhofe, R-OK Nov. 16, 1994
8 Ron Wyden, D-OR Feb. 6, 1996
9 Richard J. Durbin, D-IL Jan. 3, 1997
10 Jack Reed, D-RI Jan. 3, 1997
11 Susan Collins, R-ME Jan. 3, 1997
12 Charles E. Schumer, D-NY Jan. 3, 1999
13 Michael D. Crapo, R-ID Jan. 3, 1999
14 Thomas R. Carper, D-DE Jan. 3, 2001
15 Debbie Stabenow, D-MI Jan. 3, 2001
16 Maria Cantwell, D-WA Jan. 3, 2001
17 John Cornyn, R-TX Dec. 2, 2002
18 Lisa Murkowski, R-AK Dec. 20, 2002
19 Lindsey Graham, R-SC Jan. 3, 2003
20 Richard M. Burr, R-NC Jan. 3, 2005
21 John Thune, R-SD Jan. 3, 2005
22 Robert Menendez, D-NJ Jan. 17, 2006
23 Benjamin L. Cardin, D-MD Jan. 3, 2007
24 Bernie Sanders, I-VT Jan. 3, 2007
25 Sherrod Brown, D-OH Jan. 3, 2007
26 Bob Casey, D-PA Jan. 3, 2007
27 Amy Klobuchar, D-MN Jan. 3, 2007
28 Sheldon Whitehouse, D-RI Jan. 3, 2007
29 Jon Tester, D-MT Jan. 3, 2007
30 John A. Barrasso, R-WY Jun. 22, 2007
31 Roger Wicker, R-MS Dec. 31, 2007
32 Jeanne Shaheen, D-NH Jan. 3, 2009
33 Mark Warner, D-VA Jan. 3, 2009
34 Jim Risch, R-ID Jan. 3, 2009
35 Jeff Merkley, D-OR Jan. 3, 2009
36 Michael Bennet, D-CO Jan. 21, 2009
37 Kirsten Gillibrand, D-NY Jan. 26, 2009*
38 Joe Manchin, D-WV Nov. 15, 2010
39 Chris Coons, D-DE Nov. 15, 2010
40 Roy Blunt, R-MO Jan. 3, 2011
41 Jerry Moran, R-KS Jan. 3, 2011
42 Rob Portman, R-OH Jan. 3, 2011
43 John Boozman, R-AR Jan. 3, 2011
44 Pat Toomey, R-PA Jan. 3, 2011
45 John Hoeven, R-ND Jan. 3, 2011
46 Marco Rubio, R-FL Jan. 3, 2011
47 Ron Johnson, R-WI Jan. 3, 2011
48 Rand Paul, R-KY Jan. 3, 2011
49 Richard Blumenthal, D-CT Jan. 3, 2011
50 Mike Lee, R-UT Jan. 3, 2011
51 Brian Schatz, D-HI Dec. 26, 2012
52 Tim Scott, R-SC Jan. 2, 2013**
53 Tammy Baldwin, D-WI Jan. 3, 2013
54 Chris Murphy, D-CT Jan. 3, 2013
55 Mazie Hirono, D-HI Jan. 3, 2013
56 Martin Heinrich, D-NM Jan. 3, 2013
57 Angus King, I-ME Jan. 3, 2013
58 Tim Kaine, D-VA Jan. 3, 2013
59 Ted Cruz, R-TX Jan. 3, 2013
60 Elizabeth Warren, D-MA Jan. 3, 2013
61 Deb Fischer, R-NE Jan. 3, 2013
62 Edward Markey, D-MA Jul. 16, 2013
63 Cory Booker, D-NJ Oct. 31, 2013
64 Shelley Moore Capito, R-WV Jan. 3, 2015
65 Gary Peters, D-MI Jan. 3, 2015
66 Bill Cassidy, R-LA Jan. 3, 2015
67 James Lankford, R-OK Jan. 3, 2015
68 Tom Cotton, R-AR Jan. 3, 2015
69 Steve Daines, R-MT Jan. 3, 2015
70 Mike Rounds, R-SD Jan. 3, 2015
71 Thom Tillis, R-NC Jan. 3, 2015
72 Joni Ernst, R-IA Jan. 3, 2015
73 Ben Sasse, R-NE Jan. 3, 2015
74 Dan Sullivan, R-AK Jan. 3, 2015
75 Chris Van Hollen, D-MD Jan. 3, 2017
76 Todd Young, R-IN Jan. 3, 2017
77 Tammy Duckworth, D-IL Jan. 3, 2017
78 Maggie Hassan, D-NH Jan. 3, 2017
79 John Kennedy, R-LA Jan. 3, 2017
80 Catherine Cortez Masto, D-NV Jan. 3, 2017
81 Tina Smith, D-MN Jan. 3, 2018
82 Cindy Hyde-Smith, R-MS Apr. 2, 2018
83 Marsha Blackburn, R-TN Jan. 3, 2019
84 Kyrsten Sinema, D-AZ Jan. 3, 2019
85 Kevin Cramer, R-ND Jan. 3, 2019
86 Jacky Rosen, D-NV Jan. 3, 2019
87 Mitt Romney, R-UT Jan. 3, 2019
88 Mike Braun, R-IN Jan. 3, 2019
89 Josh Hawley, R-MO Jan. 3, 2019
90 Rick Scott, R-FL Jan. 8, 2019
91 Mark Kelly, D-AZ Dec. 2, 2020
92 Ben Ray Luján, (D-NM) Jan. 3, 2021
93 Cynthia M. Lummis, (R-WY) Jan. 3, 2021
94 Roger W. Marshall, (R-KS) Jan. 3, 2021
95 John W. Hickenlooper, Jr., (D-CO) Jan. 3, 2021
96 William F.Hagerty, IV, (R-TN) Jan. 3, 2021
97 Thomas H. Tuberville, (R-AL) Jan. 3, 2021
98 Alex Padilla, (D-CA) Jan. 20, 2021
99 Jon Ossoff, (D-GA) Jan. 20, 2021
100 Raphael G. Warnock, (D-GA) Jan. 20, 2021

Kirsten Gillibrand was appointed on January 23, 2009. She resigned her House seat on January 26, and was sworn into office on January 27, 2009.

** Tim Scott was appointed on January 2, 2013, and resigned his House seat that same day. He was sworn into office on January 3, 2013.