Senate Facts

As of January 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)
  • Maria Cantwell (Washington)
  • Ben Cardin (Maryland) Has announced he will not seek re-election.
  • Tom Carper (Delaware)
  • Robert Casey (Pennsylvania)
  • Dianne Feinstein (California) Has announced she will not seek re-election. 
  • Kirsten Gillibrand (New York)
  • Martin Heinrich (New Mexico)
  • Mazie Hirono (Hawaii)
  • Tim Kaine (Virginia)
  • Amy Klobuchar (Minnesota)
  • Joe Manchin (West Virginia)
  • 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 Barraasso (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)
  • 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. Dianne Feinstein, D-California, November 4, 1992
  4. Patty Murray, D-Washington, January 3, 1993
  5. Ron Wyden, D-Oregon, February 6, 1996
  6. Richard Durbin, D-Illinois, January 3, 1997
  7. Jack Reed, D-Rhode Island, January 3,1997
  8. Susan Collins, R-Maine, January 3, 1997
  9. Chuck Schumer, D-New York, January 3, 1999
  10. Michael Crapo, R-Idaho, January 3, 1999
  11. Thomas Carper, D-Delaware, January 3, 2001
  12. Debbie Stabenow, D-Michigan, January 3, 2001
  13. Maria Cantwell, D-Washington, January 3, 2001
  14. Lisa Murkowski, R-Alaska, December 20, 2002
  15. Lindsey Graham, R-South Carolina, January 3, 2003
  16. John Cornyn, R-Texas, December 2, 2002
  17. John Thune, R-South Dakota, January 3, 2005
  18. Robert Menendez, D-New Jersey, January 18, 2006
  19. Benjamin L. Cardin, D-Maryland, January 3, 2007
  20. Bernie Sanders, I-Vermont, January 3, 2007
  21. Sherrod Brown, D-Ohio, January 3, 2007
  22. Bob Casey, D-Pennsylvania, January 3, 2007
  23. Amy Klobuchar, D-Minnesota, January 3, 2007
  24. Sheldon Whitehouse, D-Rhode Island, January 3, 2007
  25. Jon Tester, D-Montana, January 3, 2007
  26. John A. Barrasso, R-Wyoming, June 22, 2007
  27. Roger Wicker, R-Mississippi, December 31, 2007
  28. Jeanne Shaheen, D-New Hampshire, January 3, 2009
  29. Mark Warner, D-Virginia, January 3, 2009
  30. Jim Risch, R-Idaho, January 3, 2009
  31. Jeff Merkley, D-Oregon, January 3, 2009
  32. Michael Bennet, D-Colorado, January 22, 2009
  33. Kirsten Gillibrand, D-New York, January 27, 2009
  34. Joe Manchin, D-West Virginia, November 15, 2010
  35. Chris Coons, D-Delaware, November 15, 2010
  36. Jerry Moran, R-Kansas, January 3, 2011
  37. John Boozman, R-Arkansas, January 3, 2011
  38. John Hoeven, R-North Dakota, January 3, 2011
  39. Marco Rubio, R-Florida, January 3, 2011
  40. Ron Johnson, R-Wisconsin, January 3, 2011
  41. Rand Paul, R-Kentucky, January 3, 2011
  42. Richard Blumenthal, D-Connecticut, January 3, 2011
  43. Mike Lee, R-Utah, January 3, 2011
  44. Brian Schatz, D-Hawaii, December 27, 2012
  45. Tim Scott, R-South Carolina, January 3, 2013
  46. Tammy Baldwin, D-Wisconsin, January 3, 2013
  47. Chris Murphy, D-Connecticut, January 3, 2013
  48. Mazie Hirono, D-Hawaii, January 3, 2013
  49. Martin Heinrich, D-New Mexico, January 3, 2013
  50. Angus King, I-Maine, January 3, 2013
  51. Tim Kaine, D-Virginia, January 3, 2013
  52. Ted Cruz, R-Texas, January 3, 2013
  53. Elizabeth Warren, D-Massachusetts, January 3, 2013
  54. Deb Fischer, R-Nebraska, January 3, 2013
  55. Edward Markey, D-Massachusetts, July 16, 2013
  56. Cory Booker, D-New Jersey, October 31, 2013
  57. Shelley Moore Capito, R-West Virginia, January 3, 2015
  58. Gary Peters, D-Michigan, January 3, 2015
  59. Bill Cassidy, R-Louisiana, January 3, 2015
  60. James Lankford, R-Oklahoma, January 3, 2015
  61. Tom Cotton, R-Arkansas, January 3, 2015
  62. Steve Daines, R-Montana, January 3, 2015
  63. Mike Rounds, R-South Dakota, January 3, 2015
  64. Thom Tillis, R-North Carolina, January 3, 2015
  65. Joni Ernst, R-Iowa, January 3, 2015
  66. Dan Sullivan, R-Alaska, January 3, 2015
  67. Chris Van Hollen, D-Maryland, January 3, 2017
  68. Todd Young, R-Indiana, January 3, 2017
  69. Tammy Duckworth, D-Illinois, January 3, 2017
  70. Maggie Hassan, D-New Hampshire, January 3, 2017
  71. John Kennedy, R-Louisiana, January 3, 2017
  72. Catherine Cortez-Masto, D-Nevada, January 3, 2017
  73. Tina Smith, D-Minnesota, January 3, 2018
  74. Cindy Hyde Smith, R-Mississippi, April 9, 2018
  75. Marsha Blackburn, R-Tennessee, January 3, 2019
  76. Kyrsten Sinema, I-Arizona, January 3, 2019
  77. Kevin Cramer, R-North Dakota, January 3, 2019
  78. Jacky Rosen, D-Nevada, January 3, 2019
  79. Mitt Romney, R-Utah, January 3, 2019
  80. Mike Braun, R-Indiana, January 3, 2019
  81. Josh Hawley, R-Missouri, January 3, 2019
  82. Rick Scott, R-Florida, January 8, 2019
  83. Mark Kelly, D-Arizona, December 2, 2020
  84. Ben Ray Lujan, D-New Mexico, January 3, 2021
  85. Cynthia Loomis, R-Wyoming, January 3, 2021
  86. Roger Marshall, R-Kansas, January 3, 2021
  87. John Hickenlooper, D-Colorado, January 3, 2021
  88. Bill Hagerty, R-Tennessee, January 3, 2021
  89. Tommy Tuberville, R-Alabama, January 3, 2021
  90. Alex Padilla, D-California, January 20, 2021
  91. Jon Ossoff, D-Georgia, January 20, 2021
  92. Raphael Warnock D-Georgia, January 20, 2021
  93. Peter Welch D-Vermont, January 3, 2023
  94. Markwayne Mullin, R-Oklahoma, January 3, 2023
  95. Ted Budd, R-North Carolina, January 3, 2023
  96. John Fetterman, D- Pennsylvania, January 3, 2023
  97. JD Vance, R-Ohio, January 3, 2023
  98. Eric Schmitt, R-Missouri, January 3, 2023
  99. Katie Britt, R-Alabama, January 3, 2023
  100. Pete Ricketts, R-Nebraska, January 23, 2023.