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Senate Seniority

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Senate Seniority List: 115th 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 Orrin G. Hatch, R-UT Jan. 3, 1977
3 Charles E. Grassley, R-IA Jan. 3, 1981
4 Mitch McConnell, R-KY Jan. 3, 1985
5 Richard C. Shelby, R-AL Jan. 3, 1987
6 Dianne Feinstein, D-CA Nov. 4, 1992
7 Patty Murray, D-WA Jan. 3, 1993
8 James M. Inhofe, R-OK Nov. 16, 1994
9 Ron Wyden, D-OR Feb. 6, 1996
10 Pat Roberts, R-KS Jan. 3, 1997
11 Richard J. Durbin, D-IL Jan. 3, 1997
12 Jack Reed, D-RI Jan. 3, 1997
13 Susan Collins, R-ME Jan. 3, 1997
14 Michael B. Enzi, R-WY Jan. 3, 1997
15 Charles E. Schumer, D-NY Jan. 3, 1999
16 Michael D. Crapo, R-ID Jan. 3, 1999
17 Bill Nelson, D-FL Jan. 3, 2001
18 Thomas R. Carper, D-DE Jan. 3, 2001
19 Debbie Stabenow, D-MI Jan. 3, 2001
20 Maria Cantwell, D-WA Jan. 3, 2001
21 John Cornyn, R-TX Dec. 2, 2002
22 Lisa Murkowski, R-AK Dec. 20, 2002
23 Lindsey Graham, R-SC Jan. 3, 2003
24 Lamar Alexander, R-TN Jan. 3, 2003
25 Richard M. Burr, R-NC Jan. 3, 2005
26 John Thune, R-SD Jan. 3, 2005
27 Johnny Isakson, R-GA Jan. 3, 2005
28 Robert Menendez, D-NJ Jan. 17, 2006
29 Benjamin L. Cardin, D-MD Jan. 3, 2007
30 Bernie Sanders, I-VT Jan. 3, 2007
31 Sherrod Brown, D-OH Jan. 3, 2007
32 Bob Casey, D-PA Jan. 3, 2007
33 Bob Corker, R-TN Jan. 3, 2007
34 Claire McCaskill, D-MO Jan. 3, 2007
35 Amy Klobuchar, D-MN Jan. 3, 2007
36 Sheldon Whitehouse, D-RI Jan. 3, 2007
37 Jon Tester, D-MT Jan. 3, 2007
38 John A. Barrasso, R-WY Jun. 22, 2007
39 Roger Wicker, R-MS Dec. 31, 2007
40 Tom Udall, D-NM Jan. 3, 2009
41 Jeanne Shaheen, D-NH Jan. 3, 2009
42 Mark Warner, D-VA Jan. 3, 2009
43 Jim Risch, R-ID Jan. 3, 2009
44 Jeff Merkley, D-OR Jan. 3, 2009
45 Michael Bennet, D-CO Jan. 21, 2009
46 Kirsten Gillibrand, D-NY Jan. 26, 2009*
47 Joe Manchin, D-WV Nov. 15, 2010
48 Chris Coons, D-DE Nov. 15, 2010
49 Roy Blunt, R-MO Jan. 3, 2011
50 Jerry Moran, R-KS Jan. 3, 2011
51 Rob Portman, R-OH Jan. 3, 2011
52 John Boozman, R-AR Jan. 3, 2011
53 Pat Toomey, R-PA Jan. 3, 2011
54 John Hoeven, R-ND Jan. 3, 2011
55 Marco Rubio, R-FL Jan. 3, 2011
56 Ron Johnson, R-WI Jan. 3, 2011
57 Rand Paul, R-KY Jan. 3, 2011
58 Richard Blumenthal, D-CT Jan. 3, 2011
59 Mike Lee, R-UT Jan. 3, 2011
60 Dean Heller, R-NV May 9, 2011
61 Brian Schatz, D-HI Dec. 26, 2012
62 Tim Scott, R-SC Jan. 2, 2013**
63 Tammy Baldwin, D-WI Jan. 3, 2013
64 Jeff Flake, R-AZ Jan. 3, 2013
65 Joe Donnelly, D-IN Jan. 3, 2013
66 Chris Murphy, D-CT Jan. 3, 2013
67 Mazie Hirono, D-HI Jan. 3, 2013
68 Martin Heinrich, D-NM Jan. 3, 2013
69 Angus King, I-ME Jan. 3, 2013
70 Tim Kaine, D-VA Jan. 3, 2013
71 Ted Cruz, R-TX Jan. 3, 2013
72 Elizabeth Warren, D-MA Jan. 3, 2013
73 Deb Fischer, R-NE Jan. 3, 2013
74 Heidi Heitkamp, D-N.D. Jan. 3, 2013
75 Edward Markey, D-MA Jul. 16, 2013
76 Cory Booker, D-NJ Oct. 31, 2013
77 Shelley Moore Capito, R-WV Jan. 3, 2015
78 Gary Peters, D-MI Jan. 3, 2015
79 Bill Cassidy, R-LA Jan. 3, 2015
80 Cory Gardner, R-CO Jan. 3, 2015
81 James Lankford, R-OK Jan. 3, 2015
82 Tom Cotton, R-AR Jan. 3, 2015
83 Steve Daines, R-MT Jan. 3, 2015
84 Mike Rounds, R-SD Jan. 3, 2015
85 David Perdue, R-GA Jan. 3, 2015
86 Thom Tillis, R-NC Jan. 3, 2015
87 Joni Ernst, R-IA Jan. 3, 2015
88 Ben Sasse, R-NE Jan. 3, 2015
89 Dan Sullivan, R-AK Jan. 3, 2015
90 Chris Van Hollen, D-MD Jan. 3, 2017
91 Todd Young, R-IN Jan. 3, 2017
92 Tammy Duckworth, D-IL Jan. 3, 2017
93 Maggie Hassan, D-NH Jan. 3, 2017
94 Kamala Harris, D-CA Jan. 3, 2017
95 John Kennedy, R-LA Jan. 3, 2017
96 Catherine Cortez Masto, D-NV Jan. 3, 2017
97 Tina Smith, D-MN Jan. 3, 2018
98 Doug Jones, D-AL Jan. 3, 2018
99 Cindy Hyde-Smith, R-MS Apr. 2, 2018
100 Jon Kyl, R-AZ Sept. 4, 2018

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.