These are tables of congressional delegations from South Dakota to the United States Senate and United States House of Representatives. The current dean of the South Dakota delegation is Senator and Senate Minority Whip John Thune, having served in the Senate since 2005, and previously serving in the House from 1997 until 2003. United States Senate U.S. House of Representatives Key See also List of United States congressional districts South Dakota's congressional districts Political party strength in South Dakota References Politics of South Dakota South Dakota Congressional delegations