Senate Facts

Senate Facts

As of October 3, 2023:

Democrat: 48

Independent: 3 (For organizational purposes, Senators King, Sanders and Sinema caucus with the Democrats)

Republican: 49

Democrats (20)

  • Tammy Baldwin (Wisconsin)
  • Sherrod Brown (Ohio)
  • Laphonza Butler 
    (California) Has announced she will not seek re-election.
  • Maria Cantwell (Washington)
  • Ben Cardin (Maryland) Has announced he will not seek re-election.
  • Tom Carper (Delaware) Has announced he will not seek re-election.
  • Robert Casey (Pennsylvania)
  • Kirsten Gillibrand (New York)
  • Martin Heinrich (New Mexico)
  • Mazie Hirono (Hawaii)
  • Tim Kaine (Virginia)
  • Amy Klobuchar (Minnesota)
  • Joe Manchin (West Virginia) Has announced he will not seek re-election.
  • Robert Menendez (New Jersey)
  • Chris Murphy (Connecticut)
  • Jacky Rosen (Nevada)
  • Debbie Stabenow (Michigan) Has announced she will not seek re-election.
  • Jon Tester (Montana)
  • Elizabeth Warren (Massachusetts)
  • Sheldon Whitehouse (Rhode Island)

Republicans (11)

  • John Barrasso (Wyoming)
  • Marsha Blackburn (Tennessee)
  • Mike Braun (Indiana) Has announced he will not seek re-election.
  • Kevin Cramer (North Dakota)
  • Ted Cruz (Texas)
  • Deb Fischer (Nebraska)
  • Josh Hawley (Missouri)
  • Pete Ricketts (Nebraska)
  • Mitt Romney (Utah) Has announced he will not seek re-election.
  • Rick Scott (Florida) 
  • Roger Wicker (Mississippi)

Independents (3)

  • Angus King (Maine)
  • Bernie Sanders (Vermont)
  • Kyrsten Sinema (Arizona)

From 1789 to 1958, senators whose terms began on the same day are listed alphabetically. Beginning in 1959, senators are listed according to commencement of first Senate term by order of service, determined by former service in order as senator, vice president, House member, cabinet secretary, governor, and then by state population. This latter system for calculating order of service has been used by the modern Senate for many years for the purposes of office assignment. It is unclear just when the Senate first began applying such criteria.

Source

  1. Charles Grassley, R-Iowa, January 3, 1981
  2. Mitch McConnell, R-Kentucky, January 3, 1985
  3. Patty Murray, D-Washington, January 3, 1993
  4. Ron Wyden, D-Oregon, February 6, 1996
  5. Richard Durbin, D-Illinois, January 3, 1997
  6. Jack Reed, D-Rhode Island, January 3,1997
  7. Susan Collins, R-Maine, January 3, 1997
  8. Chuck Schumer, D-New York, January 3, 1999
  9. Michael Crapo, R-Idaho, January 3, 1999
  10. Thomas Carper, D-Delaware, January 3, 2001
  11. Debbie Stabenow, D-Michigan, January 3, 2001
  12. Maria Cantwell, D-Washington, January 3, 2001
  13. Lisa Murkowski, R-Alaska, December 20, 2002
  14. Lindsey Graham, R-South Carolina, January 3, 2003
  15. John Cornyn, R-Texas, December 2, 2002
  16. John Thune, R-South Dakota, January 3, 2005
  17. Robert Menendez, D-New Jersey, January 18, 2006
  18. Benjamin L. Cardin, D-Maryland, January 3, 2007
  19. Bernie Sanders, I-Vermont, January 3, 2007
  20. Sherrod Brown, D-Ohio, January 3, 2007
  21. Bob Casey, D-Pennsylvania, January 3, 2007
  22. Amy Klobuchar, D-Minnesota, January 3, 2007
  23. Sheldon Whitehouse, D-Rhode Island, January 3, 2007
  24. Jon Tester, D-Montana, January 3, 2007
  25. John A. Barrasso, R-Wyoming, June 22, 2007
  26. Roger Wicker, R-Mississippi, December 31, 2007
  27. Jeanne Shaheen, D-New Hampshire, January 3, 2009
  28. Mark Warner, D-Virginia, January 3, 2009
  29. Jim Risch, R-Idaho, January 3, 2009
  30. Jeff Merkley, D-Oregon, January 3, 2009
  31. Michael Bennet, D-Colorado, January 22, 2009
  32. Kirsten Gillibrand, D-New York, January 27, 2009
  33. Joe Manchin, D-West Virginia, November 15, 2010
  34. Chris Coons, D-Delaware, November 15, 2010
  35. Jerry Moran, R-Kansas, January 3, 2011
  36. John Boozman, R-Arkansas, January 3, 2011
  37. John Hoeven, R-North Dakota, January 3, 2011
  38. Marco Rubio, R-Florida, January 3, 2011
  39. Ron Johnson, R-Wisconsin, January 3, 2011
  40. Rand Paul, R-Kentucky, January 3, 2011
  41. Richard Blumenthal, D-Connecticut, January 3, 2011
  42. Mike Lee, R-Utah, January 3, 2011
  43. Brian Schatz, D-Hawaii, December 27, 2012
  44. Tim Scott, R-South Carolina, January 3, 2013
  45. Tammy Baldwin, D-Wisconsin, January 3, 2013
  46. Chris Murphy, D-Connecticut, January 3, 2013
  47. Mazie Hirono, D-Hawaii, January 3, 2013
  48. Martin Heinrich, D-New Mexico, January 3, 2013
  49. Angus King, I-Maine, January 3, 2013
  50. Tim Kaine, D-Virginia, January 3, 2013
  51. Ted Cruz, R-Texas, January 3, 2013
  52. Elizabeth Warren, D-Massachusetts, January 3, 2013
  53. Deb Fischer, R-Nebraska, January 3, 2013
  54. Edward Markey, D-Massachusetts, July 16, 2013
  55. Cory Booker, D-New Jersey, October 31, 2013
  56. Shelley Moore Capito, R-West Virginia, January 3, 2015
  57. Gary Peters, D-Michigan, January 3, 2015
  58. Bill Cassidy, R-Louisiana, January 3, 2015
  59. James Lankford, R-Oklahoma, January 3, 2015
  60. Tom Cotton, R-Arkansas, January 3, 2015
  61. Steve Daines, R-Montana, January 3, 2015
  62. Mike Rounds, R-South Dakota, January 3, 2015
  63. Thom Tillis, R-North Carolina, January 3, 2015
  64. Joni Ernst, R-Iowa, January 3, 2015
  65. Dan Sullivan, R-Alaska, January 3, 2015
  66. Chris Van Hollen, D-Maryland, January 3, 2017
  67. Todd Young, R-Indiana, January 3, 2017
  68. Tammy Duckworth, D-Illinois, January 3, 2017
  69. Maggie Hassan, D-New Hampshire, January 3, 2017
  70. John Kennedy, R-Louisiana, January 3, 2017
  71. Catherine Cortez-Masto, D-Nevada, January 3, 2017
  72. Tina Smith, D-Minnesota, January 3, 2018
  73. Cindy Hyde Smith, R-Mississippi, April 9, 2018
  74. Marsha Blackburn, R-Tennessee, January 3, 2019
  75. Kyrsten Sinema, I-Arizona, January 3, 2019
  76. Kevin Cramer, R-North Dakota, January 3, 2019
  77. Jacky Rosen, D-Nevada, January 3, 2019
  78. Mitt Romney, R-Utah, January 3, 2019
  79. Mike Braun, R-Indiana, January 3, 2019
  80. Josh Hawley, R-Missouri, January 3, 2019
  81. Rick Scott, R-Florida, January 8, 2019
  82. Mark Kelly, D-Arizona, December 2, 2020
  83. Ben Ray Lujan, D-New Mexico, January 3, 2021
  84. Cynthia Loomis, R-Wyoming, January 3, 2021
  85. Roger Marshall, R-Kansas, January 3, 2021
  86. John Hickenlooper, D-Colorado, January 3, 2021
  87. Bill Hagerty, R-Tennessee, January 3, 2021
  88. Tommy Tuberville, R-Alabama, January 3, 2021
  89. Alex Padilla, D-California, January 20, 2021
  90. Jon Ossoff, D-Georgia, January 20, 2021
  91. Raphael Warnock D-Georgia, January 20, 2021
  92. Peter Welch D-Vermont, January 3, 2023
  93. Markwayne Mullin, R-Oklahoma, January 3, 2023
  94. Ted Budd, R-North Carolina, January 3, 2023
  95. John Fetterman, D- Pennsylvania, January 3, 2023
  96. JD Vance, R-Ohio, January 3, 2023
  97. Eric Schmitt, R-Missouri, January 3, 2023
  98. Katie Britt, R-Alabama, January 3, 2023
  99. Pete Ricketts, R-Nebraska, January 23, 2023
  100. Laphonza Butler, D-California, October 3, 2023