List of United States senators in the 115th Congress

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This is a complete list of United States senators during the 115th United States Congress listed by seniority, from January 3, 2017, to January 3, 2019. It is a historical listing and will contain people who have not served the entire two-year Congress on account of resignations, deaths, or expulsions.

In this Congress, Bill Cassidy is the most junior senior senator. Jeff Sessions was the most senior junior senator at the start of this Congress, but resigned on February 8, 2017, to become United States Attorney General. Maria Cantwell has remained the most senior junior senator since.

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][4][5]

Terms of service[edit]

Class Terms of service of senators that expired in years
Class 1 Terms of service of senators that expired in 2019[6]
Class 2 Terms of service of senators that expired in 2021[7]
Class 3 Terms of service of senators that expired in 2023[8]

U.S. Senate seniority list[edit]

Rank Historical
rank
Senator Party State Seniority date Other factors
1 1692 Patrick Leahy Democratic Vermont January 3, 1975
2 1708 Orrin Hatch Republican Utah January 3, 1977
3 1719 Thad Cochran[9] Republican Mississippi December 27, 1978 Former member of the U.S. House of Representatives
4 1743 Chuck Grassley Republican Iowa January 3, 1981
5 1766 Mitch McConnell Republican Kentucky January 3, 1985
6 1775 Richard Shelby Republican Alabama January 3, 1987 Former member of the U.S. House of Representatives (8 years)
7 1777 John McCain[10] Republican Arizona Former member of the U.S. House of Representatives (4 years)
8 1801 Dianne Feinstein Democratic California November 10, 1992  
9 1812 Patty Murray Democratic Washington January 3, 1993  
10 1816 Jim Inhofe Republican Oklahoma November 17, 1994
11 1827 Ron Wyden Democratic Oregon February 6, 1996
12 1830 Pat Roberts Republican Kansas January 3, 1997 Former member of the U.S. House of Representatives (16 years)
13 1831 Dick Durbin Democratic Illinois Former member of the U.S. House of Representatives (14 years)
14 1835 Jack Reed Democratic Rhode Island Former member of the U.S. House of Representatives (6 years)
15 1839 Jeff Sessions[11] Republican Alabama Alabama 22nd in population (1990)
16 1842 Susan Collins Republican Maine Maine 38th in population (1990)
17 1843 Mike Enzi Republican Wyoming Wyoming 50th in population (1990)
18 1844 Chuck Schumer Democratic New York January 3, 1999 Former member of the U.S. House of Representatives (18 years)
19 1846 Mike Crapo Republican Idaho Former member of the U.S. House of Representatives (6 years)
20 1854 Bill Nelson Democratic Florida January 3, 2001 Former member of the U.S. House of Representatives (12 years)
21 1855 Tom Carper Democratic Delaware Former member of the U.S. House of Representatives (10 years)
22 1856 Debbie Stabenow Democratic Michigan Former member of the U.S. House of Representatives (4 years)
23 1859 Maria Cantwell Democratic Washington Former member of the U.S. House of Representatives (2 years)
24 1873 John Cornyn Republican Texas December 1, 2002  
25 1867 Lisa Murkowski Republican Alaska December 20, 2002  
26 1869 Lindsey Graham Republican South Carolina January 3, 2003 Former member of the U.S. House of Representatives
27 1871 Lamar Alexander Republican Tennessee  
28 1876 Richard Burr Republican North Carolina January 3, 2005 Former member of the U.S. House of Representatives (10 years)
29 1879 John Thune Republican South Dakota Former member of the U.S. House of Representatives (6 years)
30 1880 Johnny Isakson Republican Georgia Former member of the U.S. House of Representatives (5 years, 10 months)
31 1885 Bob Menendez Democratic New Jersey January 18, 2006  
32 1886 Ben Cardin Democratic Maryland January 3, 2007 Former member of the U.S. House of Representatives (20 years)
33 1887 Bernie Sanders Independent Vermont Former member of the U.S. House of Representatives (16 years)[12]
34 1888 Sherrod Brown Democratic Ohio Former member of the U.S. House of Representatives (14 years)
35 1889 Bob Casey, Jr. Democratic Pennsylvania Pennsylvania 6th in population (2000)
36 1891 Bob Corker Republican Tennessee Tennessee 16th in population (2000)
37 1892 Claire McCaskill Democratic Missouri Missouri 17th in population (2000)
38 1893 Amy Klobuchar Democratic Minnesota Minnesota 21st in population (2000)
39 1894 Sheldon Whitehouse Democratic Rhode Island Rhode Island 43rd in population (2000)
40 1895 Jon Tester Democratic Montana Montana 44th in population (2000)
41 1896 John Barrasso Republican Wyoming June 25, 2007  
42 1897 Roger Wicker Republican Mississippi December 31, 2007
43 1899 Tom Udall Democratic New Mexico January 3, 2009 Former member of the U.S. House of Representatives
44 1901 Jeanne Shaheen Democratic New Hampshire Former governor (6 years)
45 1902 Mark Warner Democratic Virginia Former governor (4 years)
46 1903 Jim Risch Republican Idaho Former governor (7 months)
47 1905 Jeff Merkley Democratic Oregon  
48 1909 Michael Bennet Democratic Colorado January 21, 2009
49 1910 Kirsten Gillibrand Democratic New York January 26, 2009
50 1911 Al Franken[13] Democratic Minnesota July 7, 2009
51 1916 Joe Manchin Democratic West Virginia November 15, 2010 Former governor
52 1917 Chris Coons Democratic Delaware  
53 1919 Roy Blunt Republican Missouri January 3, 2011 Former member of the U.S. House of Representatives (14 years); Missouri 17th in population (2000)
54 1920 Jerry Moran Republican Kansas Former member of the U.S. House of Representatives (14 years); Kansas 32nd in population (2000)
55 1921 Rob Portman Republican Ohio Former member of the U.S. House of Representatives (12 years)
56 1922 John Boozman Republican Arkansas Former member of the U.S. House of Representatives (9 years)
57 1923 Pat Toomey Republican Pennsylvania Former member of the U.S. House of Representatives (6 years)
58 1924 John Hoeven Republican North Dakota Former governor
59 1925 Marco Rubio Republican Florida Florida 4th in population (2000)
60 1926 Ron Johnson Republican Wisconsin Wisconsin 18th in population (2000)
61 1927 Rand Paul Republican Kentucky Kentucky 25th in population (2000)
62 1928 Richard Blumenthal Democratic Connecticut Connecticut 29th in population (2000)
63 1929 Mike Lee Republican Utah Utah 34th in population (2000)
64 1931 Dean Heller Republican Nevada May 9, 2011  
65 1932 Brian Schatz Democratic Hawaii December 27, 2012
66 1933 Tim Scott Republican South Carolina January 2, 2013
67 1934 Tammy Baldwin Democratic Wisconsin January 3, 2013 Former member of the U.S. House of Representatives (14 years)
68 1935 Jeff Flake Republican Arizona Former member of the U.S. House of Representatives (12 years)
69 1936 Joe Donnelly Democratic Indiana Former member of the U.S. House of Representatives (6 years); Indiana 16th in population (2010)
70 1937 Chris Murphy Democratic Connecticut Former member of the U.S. House of Representatives (6 years); Connecticut 29th in population (2010)
71 1938 Mazie Hirono Democratic Hawaii Former member of the U.S. House of Representatives (6 years); Hawaii 42nd in population (2010)
72 1939 Martin Heinrich Democratic New Mexico Former member of the U.S. House of Representatives (4 years)
73 1940 Angus King Independent Maine Former governor (8 years)
74 1941 Tim Kaine Democratic Virginia Former governor (4 years)
75 1942 Ted Cruz Republican Texas Texas 2nd in population (2010)
76 1943 Elizabeth Warren Democratic Massachusetts Massachusetts 15th in population (2010)
77 1944 Deb Fischer Republican Nebraska Nebraska 38th in population (2010)
78 1945 Heidi Heitkamp Democratic North Dakota North Dakota 48th in population (2010)
79 1948 Ed Markey Democratic Massachusetts July 16, 2013 Former member of the U.S. House of Representatives
80 1949 Cory Booker Democratic New Jersey October 31, 2013  
81 1951 Shelley Moore Capito Republican West Virginia January 3, 2015 Former member of the U.S. House of Representatives (14 years)
82 1952 Gary Peters Democratic Michigan Former member of the U.S. House of Representatives (6 years); Michigan 9th in population (2010)
83 1953 Bill Cassidy Republican Louisiana Former member of the U.S. House of Representatives (6 years); Louisiana 25th in population (2010)
84 1954 Cory Gardner Republican Colorado Former member of the U.S. House of Representatives (4 years); Colorado 22nd in population (2010)
85 1955 James Lankford Republican Oklahoma Former member of the U.S. House of Representatives (4 years); Oklahoma 28th in population (2010)
86 1956 Tom Cotton Republican Arkansas Former member of the U.S. House of Representatives (2 years); Arkansas 32nd in population (2010)
87 1957 Steve Daines Republican Montana Former member of the U.S. House of Representatives (2 years); Montana 44th in population (2010)
88 1958 Mike Rounds Republican South Dakota Former governor
89 1959 David Perdue Republican Georgia Georgia 8th in population (2010)
90 1960 Thom Tillis Republican North Carolina North Carolina 10th in population (2010)
91 1961 Joni Ernst Republican Iowa Iowa 30th in population (2010)
92 1962 Ben Sasse Republican Nebraska Nebraska 37th in population (2010)
93 1963 Dan Sullivan Republican Alaska Alaska 47th in population (2010)
94 1964 Chris Van Hollen Democratic Maryland January 3, 2017 Former member of the U.S. House of Representatives (14 years)
95 1965 Todd Young Republican Indiana Former member of the U.S. House of Representatives (6 years)
96 1966 Tammy Duckworth Democratic Illinois Former member of the U.S. House of Representatives (4 years)
97 1967 Maggie Hassan Democratic New Hampshire Former governor
98 1968 Kamala Harris Democratic California California 1st in population (2010)
99 1969 John Neely Kennedy Republican Louisiana Louisiana 25th in population (2010)
100 1970 Catherine Cortez Masto Democratic Nevada Nevada 35th in population (2010)
101 1971 Luther Strange[11] Republican Alabama February 9, 2017  
102 1972 Tina Smith[13] Democratic Minnesota January 3, 2018 Minnesota 21st in population (2010)
103 1973 Doug Jones[11] Democratic Alabama Alabama 23rd in population (2010)
104 1974 Cindy Hyde-Smith[9] Republican Mississippi April 2, 2018
105 1820[14] Jon Kyl[10][15] Republican Arizona September 4, 2018

See also[edit]

Notes[edit]

  1. ^ A Chronological List of United States Senators 1789-Present, via www.senate.gov
  2. ^ 1971 U.S Census Report Contains 1970 Census results.
  3. ^ 1981 U.S Census Report Contains 1980 Census results.
  4. ^ 1991 U.S Census Report Contains 1990 Census results.
  5. ^ "2000 Census State Population Rankings". Archived from the original on 2020-02-12. Retrieved 2016-10-31.
  6. ^ Terms of service of senators that expired in 2019.
  7. ^ Terms of service of senators that expired in 2021.
  8. ^ Terms of service of senators that expired in 2023.
  9. ^ a b In Mississippi, Thad Cochran (R) resigned April 1, 2018. He was replaced April 2, 2018 by Cindy Hyde-Smith (R).
  10. ^ a b In Arizona, John McCain (R) died August 25, 2018. He was replaced September 4, 2018 by Jon Kyl (R).
  11. ^ a b c In Alabama, Jeff Sessions (R) resigned February 8, 2017. He was replaced February 9, 2017 by Luther Strange (R). Strange lost the election to finish Sessions's term and was replaced January 3, 2018 by Doug Jones (D).
  12. ^ Although Sanders was a candidate for the 2016 Democratic presidential nomination, and votes with the Democrats for organizational purposes, he has been elected and classified as an Independent throughout his time in Congress.
  13. ^ a b In Minnesota, Al Franken (D) resigned January 2, 2018. He was replaced January 3, 2018 by Tina Smith (D).
  14. ^ Kyl previously served as a U.S. senator.
  15. ^ In Arizona, Jon Kyl (R) resigned December 31, 2018.

External links[edit]