Embete
| - Medlem av USAs representanthus
- kommissær
(
skatt
,
Nord-Dakota
, 1969–1980)
- delegat
(North Dakota Democratic Party, 1969–1981)
- senator i USA (102nd United States Congress, North Dakota Class 3 senate seat, 1992–1993)
- senator i USA (103rd United States Congress, North Dakota Class 3 senate seat, 1993–1995)
- senator i USA (104th United States Congress, North Dakota Class 3 senate seat, 1995–1997)
- senator i USA (105th United States Congress, North Dakota Class 3 senate seat, 1997–1999)
- senator i USA (106th United States Congress, North Dakota Class 3 senate seat, 1999–2001)
- senator i USA (107th United States Congress, North Dakota Class 3 senate seat, 2001–2003)
- senator i USA (108th United States Congress, North Dakota Class 3 senate seat, 2003–2005)
- senator i USA (109th United States Congress, North Dakota Class 3 senate seat, 2005–2007)
- senator i USA (110. kongressperiode i USA, North Dakota Class 3 senate seat, 2007–2009)
- senator i USA (111. kongressperiode i USA, North Dakota Class 3 senate seat, 2009–2011)
- medlem av USAs representanthus (97th United States Congress, North Dakota's at-large congressional district, 1981–1983)
- medlem av USAs representanthus (98th United States Congress, North Dakota's at-large congressional district, 1983–1985)
- medlem av USAs representanthus (99th United States Congress, North Dakota's at-large congressional district, 1985–1987)
- medlem av USAs representanthus (100th United States Congress, North Dakota's at-large congressional district, 1987–1989)
- medlem av USAs representanthus (101st United States Congress, North Dakota's at-large congressional district, 1989–1991)
- medlem av USAs representanthus (102nd United States Congress, North Dakota's at-large congressional district, 1991–1993)
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