These are the states holding primaries and caucuses on Super Tuesday:
Primaries: Alabama, Arizona, Arkansas, Califorinia, Connecticut, Delaware, Georgia, Illinois, Massachusetts, Missouri, New Jersey, New York, Oklahoma, Tennessee, Utah.
Caucuses: Alaska, Colorado, Idaho (Dems), Kansas (Dems) Minnesota, Montana (GOP), New Mexico (Dem), North Dakota, West Virginia (GOP 2/3 selected)
Both parties: Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Georgia, Illinois, Massachusetts, Minnesota, Missouri, New Jersey, New York, Oklahoma, Tennessee, Utah,
Democrats only: Idaho, Kansas, New Mexico
Republicans only: Montana, West Virginia
American Samoa also participates on Super Tuesday.
Winner Takes All the Republican Delegates: New York, Missouri, New Jersey, Arizona, Utah, Connecticut, Montana, Delaware, and West Virginia
Modified winner-takes-all system used in: California, Georgia, Alabama and Oklahoma