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Class I - Senators Whose Term of Service Expire in 2019

Class I terms run from the beginning of the 113th Congress on January 3, 2013, to the end of the 115th Congress on January 3, 2019. Senators in Class I were elected to office in the November 2012 general election, unless they took their seat through appointment or special election.

DemocratsRepublicans
Baldwin, Tammy (D-WI)
Brown, Sherrod (D-OH)
Cantwell, Maria (D-WA)
Cardin, Benjamin L. (D-MD)
Carper, Thomas R. (D-DE)
Casey, Robert P., Jr. (D-PA)
Donnelly, Joe (D-IN)
Feinstein, Dianne (D-CA)
Gillibrand, Kirsten E. (D-NY)
Heinrich, Martin (D-NM)
Heitkamp, Heidi (D-ND)
Hirono, Mazie K. (D-HI)
Kaine, Tim (D-VA)
Klobuchar, Amy (D-MN)
Manchin, Joe, III (D-WV)
McCaskill, Claire (D-MO)
Menendez, Robert (D-NJ)
Murphy, Christopher (D-CT)
Nelson, Bill (D-FL)
Stabenow, Debbie (D-MI)
Tester, Jon (D-MT)
Warren, Elizabeth (D-MA)
Whitehouse, Sheldon (D-RI)
Barrasso, John (R-WY)
Corker, Bob (R-TN)
Cruz, Ted (R-TX)
Fischer, Deb (R-NE)
Flake, Jeff (R-AZ)
Hatch, Orrin G. (R-UT)
Heller, Dean (R-NV)
Wicker, Roger F. (R-MS)

Independents
King, Angus S., Jr. (I-ME)
Sanders, Bernard (I-VT)

Article I, section 3 of the U.S. Constitution mandates the Senate's class structure.

Amendment XVII (1913) provides for direct election of Senators.

 
  

Class II

Senators in Class II were elected to office in the November 2002 general election. Their terms run from the beginning of the 108th Congress on January 3, 2003 to the end of the 110th Congress in January 2009.


Class III

Senators in Class III were elected to office in the November 2004 general election. Their terms run from the beginning of the 109th Congress on January 3, 2005 to the end of the 111th Congress in January 2011.


Biographical Directory of the U.S. Congress

The Directory provides information about former and current senators.

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