List of United States Senators from Colorado

Colorado was admitted to the Union on August 1, 1876, and elects senators to Senate Class 2 and Class 3. Its current senators are Democrat Michael Bennet and Republican Cory Gardner.

Class 2

Class 2 U.S. Senators belong to the electoral cycle that was first elected just to finish the 46th United States Congress in the first elections of 1876, and were elected also in 1876 to the term beginning in 1877. The seat in recent years have been contested in 2002, 2008, and 2014. The next election will be in 2020.

Class 3

Class 3 U.S. Senators belong to the electoral cycle that was first elected to finish the 46th United States Congress and for the next Congress in the first elections of 1876. The seat in recent years have been contested in 1998, 2004, and 2010, and 2016. The next election will be in 2022.