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Class I

Senators in Class I were elected to office in the November 2012 general election. Their terms run from the beginning of the 113th Congress on January 3, 2013 to the end of the 115th Congress on January 3, 2019.


Class II

Senators in Class II were elected to office in the November 2008 general election, unless they took their seat through appointment or special election. Their terms run from the beginning of the 111th Congress on January 3, 2009 to the end of the 113th Congress on January 3, 2015.


Senators by State

All senators from each state and other facts about a state's history in the U.S. Senate.