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Senate Seniority

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 Senate Seniority List: 113th 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-Utah

Jan. 3, 1977

3.

Thad Cochran, R-Miss.

Dec. 27, 1978

4.

Carl Levin, D-Mich.

Jan. 3, 1979

5.

Charles E. Grassley, R-Iowa

Jan. 3, 1981

6.

Tom Harkin, D-Iowa

Jan. 3, 1985

7.

Mitch McConnell, R-Ky.

Jan. 3, 1985

8.

John D. Rockefeller IV, D-W.Va.

Jan. 15, 1985

9.

Barbara A. Mikulski, D-Md.

Jan. 3, 1987

10.

Richard C. Shelby, R-Ala.

Jan. 3, 1987

11.

John McCain, R-Ariz.

Jan. 3, 1987

12.

Harry Reid, D-Nev.

Jan. 3, 1987

13.

Dianne Feinstein, D-Calif.

Nov. 4, 1992

14.

Barbara Boxer, D-Calif.

Jan. 3, 1993

15.

Patty Murray, D-Wash.

Jan. 3, 1993

16.

James M. Inhofe, R-Okla.

Nov. 16, 1994

17.

Ron Wyden, D-Ore.

Feb. 6, 1996

18.

Pat Roberts, R-Kan.

Jan. 3, 1997

19.

Richard J. Durbin, D-Ill.

Jan. 3, 1997

20.

Tim Johnson, D-S.D.

Jan. 3, 1997

21.

Jack Reed, D-R.I.

Jan. 3, 1997

22.

Mary L. Landrieu, D-La.

Jan. 3, 1997

23.

Jeff Sessions, R-Ala.

Jan. 3, 1997

24.

Susan Collins, R-Maine

Jan. 3, 1997

25.

Michael B. Enzi, R-Wyo.

Jan. 3, 1997

26.

Charles E. Schumer, D-N.Y.

Jan. 3, 1999

27.

Michael D. Crapo, R-Idaho

Jan. 3, 1999

28.

Bill Nelson, D-Fla.

Jan. 3, 2001

29.

Thomas R. Carper, D-Del.

Jan. 3, 2001

30.

Debbie Stabenow, D-Mich.

Jan. 3, 2001

31.

Maria Cantwell, D-Wash.

Jan. 3, 2001

32.

Lisa Murkowski, R-Alaska

Dec. 20, 2002

33.

Saxby Chambliss, R-Ga.

Jan. 3, 2003

34.

Lindsey Graham, R-S.C.

Jan. 3, 2003

35.

Lamar Alexander, R-Tenn.

Jan. 3, 2003

36.

John Cornyn, R-Texas

Dec. 2, 2002*

37.

Mark Pryor, D-Ark.

Jan. 3, 2003

38.

Richard M. Burr, R-N.C.

Jan. 3, 2005

39.

Tom Coburn, R-Okla.

Jan. 3, 2005

40.

John Thune, R-S.D.

Jan. 3, 2005

41.

Johnny Isakson, R-Ga.

Jan. 3, 2005

42.

David Vitter, R-La.

Jan. 3, 2005

43.

Robert Menendez, D-N.J.

Jan. 18, 2006

44.

Benjamin L. Cardin, D-Md.

Jan. 3, 2007

45.

Bernie Sanders, I-Vt.

Jan. 3, 2007

46.

Sherrod Brown, D-Ohio

Jan. 3, 2007

47.

Bob Casey, D-Pa.

Jan. 3, 2007

48.

Bob Corker, R-Tenn.

Jan. 3, 2007

49.

Claire McCaskill, Mo.

Jan. 3, 2007

50.

Amy Klobuchar, Minn.

Jan. 3, 2007

51.

Sheldon Whitehouse, R.I.

Jan. 3, 2007

52.

Jon Tester, Mont.

Jan. 3, 2007

53.

John A. Barrasso, R-Wyo.

June 22, 2007

54.

Roger Wicker, R-Miss.

Dec. 31, 2007

55.

Mark Udall, D-Colo.

Jan. 3, 2009

56.

Tom Udall, D-N.M.

Jan. 3, 2009

57.

Mike Johanns, R-Neb.

Jan. 3, 2009

58.

Jeanne Shaheen, D-N.H.

Jan. 3, 2009

59.

Mark Warner, D-Va.

Jan. 3, 2009

60.

Jim Risch, R-Idaho

Jan. 3, 2009

61.

Kay Hagan, D-N.C.

Jan. 3, 2009

62.

Jeff Merkley, D-Ore.

Jan. 3, 2009

63.

Mark Begich, D-Alaska

Jan. 3, 2009

64.

Michael Bennet, D-Colo.

Jan. 22, 2009

65.

Kirsten Gillibrand, D-N.Y.

Jan. 27, 2009

66.

Al Franken, D-Minn.

Jul. 7, 2009

67.

Joe Manchin, D-W. Va.

Nov. 15, 2010

68.

Chris Coons, D-Del.

Nov. 15, 2010

69.

Mark Kirk, R-Ill.

Nov. 29, 2010

70.

Dan Coats, R-Ind.

Jan. 3, 2011

71.

Roy Blunt, R-Mo.

Jan. 3, 2011

72.

Jerry Moran, R-Kan.

Jan. 3, 2011

73.

Rob Portman, R-Ohio

Jan. 3, 2011

74.

John Boozman, R-Ark.

Jan. 3, 2011

75.

Pat Toomey, R-Pa.

Jan. 3, 2011

76.

John Hoeven, R-N.D.

Jan. 3, 2011

77.

Marco Rubio, R-Fla.

Jan. 3, 2011

78.

Ron Johnson, R-Wis.

Jan. 3, 2011

79.

Rand Paul, R-Ky.

Jan. 3, 2011

80.

Richard Blumenthal, D-Conn.

Jan. 3, 2011

81.

Mike Lee, R-Utah.

Jan. 3, 2011

82.

Kelly Ayotte, R-N.H.

Jan. 3, 2011

83.

Dean Heller, R-Nev.

May 9, 2011

84.

Brian Schatz, D-Hawaii.

Dec. 27, 2012

85.

Tim Scott, R-S.C.

Jan. 3, 2013

86.

Tammy Baldwin, D-Wis.

Jan. 3, 2013

87.

Jeff Flake, R-AZ

Jan. 3, 2013

88.

Joe Donnelly, D-Ind.

Jan. 3, 2013

89.

Chris Murphy, D-Conn.

Jan. 3, 2013

90.

Mazie Hirono, D-Hawaii.

Jan. 3, 2013

91.

Martin Heinrich, D-N.M.

Jan. 3, 2013

92.

Angus King (I-ME)

Jan. 3, 2013

93.

Tim Kaine, D-Va.

Jan. 3, 2013

94.

Ted Cruz, R-TX

Jan. 3, 2013

95.

Elizabeth Warren, D-MA

Jan. 3, 2013

96.

Deb Fischer, R-NE

Jan. 3, 2013

97.

Heidi Heitkamp, D-N.D.

Jan. 3, 2013

98.

Edward Markey, D-MA

Jul. 16, 2013

99.

Cory Booker, D-N.J.

Oct. 31, 2013

100.

John Walsh, D-Mont.

Feb. 11, 2014

* Phil Gramm resigned early, effective Nov. 30, 2002, so that Cornyn could move into his office suite and begin organizing his staff. Cornyn did not, however, gain seniority, owing to a 1980 Rules Committee policy established by Senator Pell that no longer gave seniority to senators who entered Congress early for the purpose of gaining advantageous office space.