•
1988 (caucus) (March 12):
Jesse Jackson (55%),
Al Gore (17%),
Michael Dukakis (6%),
Dick Gephardt (2%), and others (0%) •
1992 (March 7):
Bill Clinton (63%),
Paul Tsongas (18%),
Tom Harkin (7%),
Jerry Brown (6%), uncommitted (3%), and others (2%) •
1996:
Primary cancelled •
2000 (March 9):
Al Gore (92%) and
Bill Bradley (2%) •
2004 (February 3):
John Edwards (45%),
John Kerry (30%),
Al Sharpton (10%),
Wesley Clark (7%),
Howard Dean (5%), and
Joe Lieberman (2%) •
2008 (January 26):
Barack Obama (55%),
Hillary Clinton (27%), and
John Edwards (18%) •
2012 (January 28):
Barack Obama (unopposed) •
2016 (February 27):
Hillary Clinton (73%) and
Bernie Sanders (26%) •
2020 (February 29):
Joe Biden (48%),
Bernie Sanders (20%),
Tom Steyer (11%),
Pete Buttigieg (8%),
Elizabeth Warren (7%),
Amy Klobuchar (3%), and
Tulsi Gabbard (1%) •
2024 (February 3):
Joe Biden (96%) == Republican results ==