Class I – DEM United States Senate

Class I terms run from the beginning of the 116th Congress on January 3, 2019, to the end of the 118th Congress on January 3, 2025.

Tammy Baldwin

State: Wisconsin
Entered Office: January 3, 2013
Term Expires: January 3, 2025
Mailing Address: 709 Hart Senate Office Building Washington DC 20510
Phone Number: (202) 224-5653

US HOUSE: Wisconsin, District 2 106th-112th (1999-2013)

Sherrod Brown

State: Ohio
Entered Office: January 3, 2007
Term Expires: January 3, 2025
Mailing Address: 503 Hart Senate Office Building Washington DC 20510
Phone Number: (202) 224-2315

US HOUSE: Ohio, District 13 103rd-109th (1993-2007)

Maria Cantwell

State: Washington
Entered Office: January 3, 2001
Term Expires: January 3, 2025
Mailing Address: 511 Hart Senate Office Building Washington DC 20510
Phone Number: (202) 224-3411

US HOUSE: Washington, District 1 103rd (1993-1995)

Benjamin L. Cardin

State: Maryland
Entered Office: January 3, 2007
Term Expires: January 3, 2025
Mailing Address: 509 Hart Senate Office Building Washington DC 20510
Phone Number: (202) 224-4524

US HOUSE: Maryland, District 3 100th-109th (1987-2007)

Thomas R. Carper

State: Delaware
Entered Office: January 3, 2001
Term Expires: January 3, 2025
Mailing Address: 513 Hart Senate Office Building Washington DC 20510
Phone Number: (202) 224-2441

US House: Delaware, District At Large 98th-102nd (1983-1993)

Robert P. Casey Jr.

State: Pennsylvania
Entered Office: January 3, 2007
Term Expires: January 3, 2025
Mailing Address: 393 Russell Senate Office Building Washington DC 20510
Phone Number: (202) 224-6324

Dianne Feinstein

State: California
Entered Office: January 3, 2092
Term Expires: January 3, 2025
Mailing Address: 331 Hart Senate Office Building Washington DC 20510
Phone Number: (202) 224-3841

Kirsten E. Gillibrand

State: New York
Entered Office: January 3, 2009
Term Expires: January 3, 2025
Mailing Address: 478 Russell Senate Office Building Washington DC 20510
Phone Number: (202) 224-4451

US HOUSE: New York, District 20 110th-111th (2007-2009)

Martin Heinrich

State: New Mexico
Entered Office: January 3, 2013
Term Expires: January 3, 2025
Mailing Address: 303 Hart Senate Office Building Washington DC 20510
Phone Number: (202) 224-5521

US HOUSE: New Mexico, District 1 111th-112th (2009-2013)

Mazie K. Hirono

State: Hawaii
Entered Office: January 3, 2013
Term Expires: January 3, 2025
Mailing Address: 713 Hart Senate Office Building Washington DC 20510
Phone Number: (202) 224-4814

US HOUSE: Hawaii, District 2 110th-112th (2007-2013)

Tim Kaine

State: Virginia
Entered Office: January 3, 2013
Term Expires: January 3, 2025
Mailing Address: 231 Russell Senate Office Building Washington DC 20510
Phone Number: (202) 224-4024

Angus S. King Jr

State: Maine
Entered Office: January 3, 2013
Term Expires: January 3, 2025
Mailing Address: 133 Hart Senate Office Building Washington DC 20510Phone Number: (202) 224-5344

Amy Klobuchar

State: Minnesota
Entered Office: January 3, 2007
Term Expires: January 3, 2025
Mailing Address: 425 Dirksen Senate Office Building Washington DC 20510
Phone Number: (202) 224-3244

Joe Manchin III

State: West Virginia
Entered Office: January 3, 2010
Term Expires: January 3, 2025
Mailing Address: 306 Hart Senate Office Building Washington DC 20510
Phone Number: (202) 224-3954

Robert Menendez

State: New Jersey
Entered Office: January 3, 2006
Term Expires: January 3, 2025
Mailing Address: 528 Hart Senate Office Building Washington DC 20510
Phone Number: (202) 224-4744

US HOUSE: New Jersey, District 13 103rd-109th (1993-2006)

Christopher Murphy

State: Connecticut
Entered Office: January 3, 2013
Term Expires: January 3, 2025
Mailing Address: 136 Hart Senate Office Building Washington DC 20510
Phone Number: (202) 224-4041

US HOUSE: Connecticut, District 5 110th-112th (2007-2013)

Jacky Rosen

State: Nevada
Entered Office: January 3, 2019
Term Expires: January 3, 2025
Mailing Address: 144 Russell Senate Office Building Washington DC 20510
Phone Number: (202) 224-6244

US HOUSE: Nevada, District 3 115th (2017-2019)

Bernard Sanders

State: Vermont
Entered Office: January 3, 2007
Term Expires: January 3, 2025
Mailing Address: 332 Dirksen Senate Office Building Washington DC 20510
Phone Number: (202) 224-5141

US HOUSE: Vermont, District At Large 102nd-109th (1991-2007)

Kyrsten Sinema

State: Arizona
Entered Office: January 3, 2019
Term Expires: January 3, 2025
Mailing Address: 317 Hart Senate Office Building Washington DC 20510
Phone Number: (202) 224-4521

US HOUSE: Arizona, District 9 113th-115th (2013-2019)

Debbie Stabenow

State: Michigan
Entered Office: January 3, 2001
Term Expires: January 3, 2025
Mailing Address: 731 Hart Senate Office Building Washington DC 20510
Phone Number: (202) 224-4822

US HOUSE: Michigan, District 8 105th-106th (1997-2001)

Jon Tester

State: Montana
Entered Office: January 3, 2007
Term Expires: January 3, 2025
Mailing Address: 311 Hart Senate Office Building Washington DC 20510
Phone Number: (202) 224-2644

Elizabeth Warren

State: Massachusetts
Entered Office: January 3, 2013
Term Expires: January 3, 2025
Mailing Address:  309 Hart Senate Office Building Washington DC 20510
Phone Number: (202) 224-4543

Sheldon Whitehouse

State: Rhode Island
Entered Office: January 3, 2007
Term Expires: January 3, 2025
Mailing Address: 530 Hart Senate Office Building Washington DC 20510
Phone Number: (202) 224-2921