Delaware's at-large congressional district is a congressional district that includes the entire U.S. state of Delaware. It is the nation's oldest congressional district, having existed uninterrupted since the 1st United States Congress in 1789. Delaware has always had only one member of the United States House of Representatives, except for a single decade from 1813 and 1823, when the state had two at-large members. The two seats were filled by a statewide ballot, with the two candidates receiving the highest votes being elected. Mike Castle, a Republican and former Governor of Delaware, held this seat from January 1993 until his retirement in January 2011, after his unsuccessful bid for the Republican nomination to run for U.S. Senator. Even as Delaware swung heavily Democratic at the state and national level, Castle was usually reelected without serious difficulty. Since his retirement, however, the Democrats have held it with no substantive opposition. The district is currently represented by Lisa Blunt Rochester, a Democrat. Recent statewide results List of members representing the district Second at-large seat: 1813–1823 From 1813 to 1823, Delaware elected two members of the United States House of Representatives. Both were elected statewide at-large. Four men held the second seat during that decade. Electoral history 1920 1922 1924 1926 1928 1930 1932 1934 1936 1938 1940 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 Notes References External links At-large At-large United States congressional districts Constituencies established in 1789 1789 establishments in Delaware