Senate Facts
Senate Facts
As of January 21, 2025:
Democrat: 45
Independent: 2 (For organizational purposes, Senators King and Sanders caucus with the Democrats)
Republican: 53
Democrats (13)
- Cory Booker (New Jersey)
- Chris Coons (Delaware)
- Dick Durbin (Illinois)
- John Hickenlooper (Colorado)
- Ben Ray Lujan (New Mexico)
- Ed Markey (Massachusetts)
- Jeff Merkley (Oregon)
- Jon Ossoff (Georgia)
- Gary Peters (Michigan) Has announced his retirement at the end of his term.
- Jack Reed (Rhode Island)
- Jeanne Shaheen (New Hampshire)
- Tina Smith (Minnesota) Has announced her retirement at the end of her term.
- Mark Warner (Virginia)
Republicans (22)
- Shelly Moore Capito (West Virginia)
- Bill Cassidy (Louisiana)
- Susan Collins (Maine)
- John Cornyn (Texas)
- Tom Cotton (Arkansas)
- Steve Daines (Montana)
- Joni Ernst (Iowa)
- Lindsey Graham (South Carolina)
- Bill Hagerty (Tennessee)
- Jon Husted (Ohio)
- Cindy Hyde Smith (Mississippi)
- Cynthia Lummis (Wyoming)
- Roger Marshall (Kansas)
- Mitch McConnell (Kentucky) Has announced his retirement at the end of his term.
- Ashley Moody (Florida)
- Markwayne Mullin (Oklahoma)
- Pete Ricketts (Nebraska)
- Jim Risch (Idaho)
- Mike Rounds (South Dakota)
- Dan Sullivan (Alaska)
- Thom Tillis (North Carolina)
- Tommy Tuberville (Alabama)
This list reflects the order in which United States Senators began their service. This is different
from seniority lists, which are maintained by the party caucuses (for the purposes of committee
assignments) and by the Senate Committee on Rules and Administration (for the purpose of
office space assignment). Members who began service on the same day are listed alphabetically.
Charles Grassley, R-Iowa, January 3, 1981
Mitch McConnell, R-Kentucky, January 3, 1985
Patty Murray, D-Washington, January 3, 1993
Ron Wyden, D-Oregon, February 6, 1996
Susan Collins, R-Maine, January 3, 1997
Richard Durbin, D-Illinois, January 3, 1997
Jack Reed, D-Rhode Island, January 3,1997
Michael Crapo, R-Idaho, January 3, 1999
Chuck Schumer, D-New York, January 3, 1999
Maria Cantwell, D-Washington, January 3, 2001
John Cornyn, R-Texas, January 7, 2003
Lindsey Graham, R-South Carolina, January 7, 2003
Lisa Murkowski, R-Alaska, January 7, 2003
John Thune, R-South Dakota, January 3, 2005
Amy Klobuchar, D-Minnesota, January 3, 2007
Bernie Sanders, I-Vermont, January 3, 2007
Sheldon Whitehouse, D-Rhode Island, January 3, 2007
John A. Barrasso, R-Wyoming, June 22, 2007
Roger Wicker, R-Mississippi, December 31, 2007
Jeff Merkley, D-Oregon, January 3, 2009
Jim Risch, R-Idaho, January 3, 2009
Jeanne Shaheen, D-New Hampshire, January 3, 2009
Mark Warner, D-Virginia, January 3, 2009
Michael Bennet, D-Colorado, January 22, 2009
Kirsten Gillibrand, D-New York, January 27, 2009
Chris Coons, D-Delaware, November 15, 2010
Richard Blumenthal, D-Connecticut, January 3, 2011
John Boozman, R-Arkansas, January 3, 2011
John Hoeven, R-North Dakota, January 3, 2011
Ron Johnson, R-Wisconsin, January 3, 2011
Mike Lee, R-Utah, January 3, 2011
Jerry Moran, R-Kansas, January 3, 2011
Rand Paul, R-Kentucky, January 3, 2011
Brian Schatz, D-Hawaii, December 27, 2012
Tammy Baldwin, D-Wisconsin, January 3, 2013
Ted Cruz, R-Texas, January 3, 2013
Deb Fischer, R-Nebraska, January 3, 2013
Martin Heinrich, D-New Mexico, January 3, 2013
Mazie Hirono, D-Hawaii, January 3, 2013
Tim Kaine, D-Virginia, January 3, 2013
Angus King, I-Maine, January 3, 2013
Chris Murphy, D-Connecticut, January 3, 2013
Tim Scott, R-South Carolina, January 3, 2013
Elizabeth Warren, D-Massachusetts, January 3, 2013
Edward Markey, D-Massachusetts, July 16, 2013
Cory Booker, D-New Jersey, October 31, 2013
Shelley Moore Capito, R-West Virginia, January 3, 2015
Bill Cassidy, R-Louisiana, January 3, 2015
Tom Cotton, R-Arkansas, January 3, 2015
Steve Daines, R-Montana, January 3, 2015
Joni Ernst, R-Iowa, January 3, 2015
James Lankford, R-Oklahoma, January 3, 2015
Gary Peters, D-Michigan, January 3, 2015
Mike Rounds, R-South Dakota, January 3, 2015
Dan Sullivan, R-Alaska, January 3, 2015
Thom Tillis, R-North Carolina, January 3, 2015
Catherine Cortez-Masto, D-Nevada, January 3, 2017
Tammy Duckworth, D-Illinois, January 3, 2017
Maggie Hassan, D-New Hampshire, January 3, 2017
John Kennedy, R-Louisiana, January 3, 2017
Chris Van Hollen, D-Maryland, January 3, 2017
Todd Young, R-Indiana, January 3, 2017
Tina Smith, D-Minnesota, January 3, 2018
Cindy Hyde Smith, R-Mississippi, April 9, 2018
Marsha Blackburn, R-Tennessee, January 3, 2019
Kevin Cramer, R-North Dakota, January 3, 2019
Josh Hawley, R-Missouri, January 3, 2019
Jacky Rosen, D-Nevada, January 3, 2019
Rick Scott, R-Florida, January 8, 2019
Mark Kelly, D-Arizona, December 2, 2020
Bill Hagerty, R-Tennessee, January 3, 2021
John Hickenlooper, D-Colorado, January 3, 2021
Ben Ray Lujan, D-New Mexico, January 3, 2021
Cynthia Lummis, R-Wyoming, January 3, 2021
Roger Marshall, R-Kansas, January 3, 2021
Tommy Tuberville, R-Alabama, January 3, 2021
Alex Padilla, D-California, January 20, 2021
Jon Ossoff, D-Georgia, January 20, 2021
Raphael Warnock D-Georgia, January 20, 2021
Katie Britt, R-Alabama, January 3, 2023
Ted Budd, R-North Carolina, January 3, 2023
John Fetterman, D- Pennsylvania, January 3, 2023
Markwayne Mullin, R-Oklahoma, January 3, 2023
Eric Schmitt, R-Missouri, January 3, 2023
Peter Welch D-Vermont, January 3, 2023
Pete Ricketts, R-Nebraska, January 23, 2023
Andy Kim, D-New Jersey, December 9, 2024
Adam Schiff, D-California, December 9, 2024
Angela Alsobrooks, D-Maryland, January 3, 2025
Jim Banks, R-Indiana, January 3, 2025
Lisa Blunt Rochester, D-Delaware, January 3, 2025
John Curtis, R-Utah, January 3, 2025
Ruben Gallego, D-Arizona January 3, 2025
David McCormick, R-Pennsylvania, January 3, 2025
Bernie Moreno, R-Ohio, January 3, 2025
Tim Sheehy, R-Montana, January 3, 2025
Elissa Slotkin, D-Michigan, January 3, 2025
Jim Justice, R-West Virginia, January 14, 2025
Jon Husted, R-Ohio, January 21, 2025
Ashley Moody, R-Florida, January 21, 2025
As of January 21, 2025:
Democrat: 45
Independent: 2 (For organizational purposes, Senators King and Sanders caucus with the Democrats)
Republican: 53
Democrats (13)
- Cory Booker (New Jersey)
- Chris Coons (Delaware)
- Dick Durbin (Illinois)
- John Hickenlooper (Colorado)
- Ben Ray Lujan (New Mexico)
- Ed Markey (Massachusetts)
- Jeff Merkley (Oregon)
- Jon Ossoff (Georgia)
- Gary Peters (Michigan)
- Jack Reed (Rhode Island)
- Jean Shaheen (New Hampshire)
- Tina Smith (Minnesota)
- Mark Warner (Virginia)
Republicans (20)
- Shelly Moore Capito (West Virginia)
- Bill Cassidy (Louisiana)
- Susan Collins (Maine)
- John Cornyn (Texas)
- Tom Cotton (Arkansas)
- Steve Daines (Montana)
- Joni Ernst (Iowa)
- Lindsey Graham (South Carolina)
- Bill Hagerty (Tennessee)
- Cindy Hyde Smith (Mississippi)
- Cynthia Lummis (Wyoming)
- Roger Marshall (Kansas)
- Mitch McConnell (Kentucky)
- Markwayne Mullin (Oklahoma)
- Pete Ricketts (Nebraska)
- Jim Risch (Idaho)
- Mike Rounds (South Dakota)
- Dan Sullivan (Alaska)
- Thom Tillis (North Carolina)
- Tommy Tuberville (Alabama)
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.
- Charles Grassley, R-Iowa, January 3, 1981
- Mitch McConnell, R-Kentucky, January 3, 1985
- Patty Murray, D-Washington, January 3, 1993
- Ron Wyden, D-Oregon, February 6, 1996
- Richard Durbin, D-Illinois, January 3, 1997
- Jack Reed, D-Rhode Island, January 3,1997
- Susan Collins, R-Maine, January 3, 1997
- Chuck Schumer, D-New York, January 3, 1999
- Michael Crapo, R-Idaho, January 3, 1999
- Maria Cantwell, D-Washington, January 3, 2001
- Lisa Murkowski, R-Alaska, December 20, 2002
- Lindsey Graham, R-South Carolina, January 3, 2003
- John Cornyn, R-Texas, December 2, 2002
- John Thune, R-South Dakota, January 3, 2005
- Bernie Sanders, I-Vermont, January 3, 2007
- Amy Klobuchar, D-Minnesota, January 3, 2007
- Sheldon Whitehouse, D-Rhode Island, January 3, 2007
- John A. Barrasso, R-Wyoming, June 22, 2007
- Roger Wicker, R-Mississippi, December 31, 2007
- Jeanne Shaheen, D-New Hampshire, January 3, 2009
- Mark Warner, D-Virginia, January 3, 2009
- Jim Risch, R-Idaho, January 3, 2009
- Jeff Merkley, D-Oregon, January 3, 2009
- Michael Bennet, D-Colorado, January 22, 2009
- Kirsten Gillibrand, D-New York, January 27, 2009
- Chris Coons, D-Delaware, November 15, 2010
- Jerry Moran, R-Kansas, January 3, 2011
- John Boozman, R-Arkansas, January 3, 2011
- John Hoeven, R-North Dakota, January 3, 2011
- Ron Johnson, R-Wisconsin, January 3, 2011
- Rand Paul, R-Kentucky, January 3, 2011
- Richard Blumenthal, D-Connecticut, January 3, 2011
- Mike Lee, R-Utah, January 3, 2011
- Brian Schatz, D-Hawaii, December 27, 2012
- Tim Scott, R-South Carolina, January 3, 2013
- Tammy Baldwin, D-Wisconsin, January 3, 2013
- Chris Murphy, D-Connecticut, January 3, 2013
- Mazie Hirono, D-Hawaii, January 3, 2013
- Martin Heinrich, D-New Mexico, January 3, 2013
- Angus King, I-Maine, January 3, 2013
- Tim Kaine, D-Virginia, January 3, 2013
- Ted Cruz, R-Texas, January 3, 2013
- Elizabeth Warren, D-Massachusetts, January 3, 2013
- Deb Fischer, R-Nebraska, January 3, 2013
- Edward Markey, D-Massachusetts, July 16, 2013
- Cory Booker, D-New Jersey, October 31, 2013
- Shelley Moore Capito, R-West Virginia, January 3, 2015
- Gary Peters, D-Michigan, January 3, 2015
- Bill Cassidy, R-Louisiana, January 3, 2015
- James Lankford, R-Oklahoma, January 3, 2015
- Tom Cotton, R-Arkansas, January 3, 2015
- Steve Daines, R-Montana, January 3, 2015
- Mike Rounds, R-South Dakota, January 3, 2015
- Thom Tillis, R-North Carolina, January 3, 2015
- Joni Ernst, R-Iowa, January 3, 2015
- Dan Sullivan, R-Alaska, January 3, 2015
- Chris Van Hollen, D-Maryland, January 3, 2017
- Todd Young, R-Indiana, January 3, 2017
- Tammy Duckworth, D-Illinois, January 3, 2017
- Maggie Hassan, D-New Hampshire, January 3, 2017
- John Kennedy, R-Louisiana, January 3, 2017
- Catherine Cortez-Masto, D-Nevada, January 3, 2017
- Tina Smith, D-Minnesota, January 3, 2018
- Cindy Hyde Smith, R-Mississippi, April 9, 2018
- Marsha Blackburn, R-Tennessee, January 3, 2019
- Kevin Cramer, R-North Dakota, January 3, 2019
- Jacky Rosen, D-Nevada, January 3, 2019
- Josh Hawley, R-Missouri, January 3, 2019
- Rick Scott, R-Florida, January 8, 2019
- Mark Kelly, D-Arizona, December 2, 2020
- Ben Ray Lujan, D-New Mexico, January 3, 2021
- Cynthia Lummis, R-Wyoming, January 3, 2021
- Roger Marshall, R-Kansas, January 3, 2021
- John Hickenlooper, D-Colorado, January 3, 2021
- Bill Hagerty, R-Tennessee, January 3, 2021
- Tommy Tuberville, R-Alabama, January 3, 2021
- Alex Padilla, D-California, January 20, 2021
- Jon Ossoff, D-Georgia, January 20, 2021
- Raphael Warnock D-Georgia, January 20, 2021
- Peter Welch D-Vermont, January 3, 2023
- Markwayne Mullin, R-Oklahoma, January 3, 2023
- Ted Budd, R-North Carolina, January 3, 2023
- John Fetterman, D- Pennsylvania, January 3, 2023
- Eric Schmitt, R-Missouri, January 3, 2023
- Katie Britt, R-Alabama, January 3, 2023
- Pete Ricketts, R-Nebraska, January 23, 2023
- Adam Schiff, D-California, December 9, 2024
- Andy Kim, D-New Jersey, December 9, 2024
- Ruben Gallego, D-Arizona January 3, 2025
- Jim Banks, R-Indiana, January 3, 2025
- John Curtis, R-Utah, January 3, 2025
- Lisa Blunt Rochester, D-Delaware, January 3, 2025
- Elissa Slotkin, D-Michigan, January 3, 2025
- David McCormick, R-Pennsylvania, January 3, 2025
- Bernie Moreno, R-Ohio, January 3, 2025
- Angela Alsobrooks, D-Maryland, January 3, 2025
- Tim Sheehy, R-Montana, January 3, 2025
- Jim Justice, R-West Virginia, January 14, 2025
- Ashley Moody, R-Florida, January 21, 2025
- Jon Husted, R-Ohio, January 21, 2025