Thomas Gerard Tancredo is an American politician from Colorado, who represented the state's sixth congressional district in the United States House of Representatives from 1999 to 2009 as a Republican. He ran for President of the United States during the 2008 election, and was the Constitution Party's unsuccessful nominee for Governor of Colorado in 2010.

Colorado's 6th congressional district is a congressional district in the U.S. state of Colorado. Located in central Colorado, the district encompasses much of the eastern part of the Denver metropolitan area, including all of Aurora, as well as portions of the southern and northern metro area.