Dorgan, Byron L.

House of Representatives — 1981–1983

House of Representatives — 1983–1985

House of Representatives — 1985–1987

House of Representatives — 1987–1989

House of Representatives — 1989–1991

House of Representatives — 1991–1993

Senate — 1991–1993

Senate — 1993–1995

Senate — 1995–1997

Senate — 1997–1999

Senate — 1999–2001

Senate — 2001–2003

Senate — 2003–2005

Senate — 2005–2007

Senate — 2007–2009

Senate — 2009–2011