Super Tuesday is the United States presidential primary election day in February or March when the greatest number of U.S. states hold primary elections and caucuses. Approximately one-third of all delegates to the presidential nominating conventions can be won on Super Tuesday, more than on any other day.

What's a political caucus?

A caucus is a meeting of supporters or members of a specific political party or movement.

What does winning the primary mean?

Primary elections, often abbreviated to primaries, are a process by which voters can indicate their preference for their party's candidate, or a candidate in general, in an upcoming general election, local election, or by-election.