I can't give you a straight answer, but I can provide the information for you to fish out the answer you're looking for...sorry I wasn't much of help.
How does a caucus differ from a primary?
Depending on the state and political party, voters in the United States participate in presidential nominating contests through either primaries or caucuses. Primaries are similar to general elections. Voters go to a polling place at any point over the course of the primary election day and cast a secret ballot.
What is the main difference between a primary and a caucus?
The main difference is that voter participation is much higher and it is more of a democratic decision making system. Primaries are much simpler than caucuses, in that party members simply show up, cast a ballot, and leave.
Primaries are similar to general elections. Voters go to a polling place at any point over the course of the primary election day and cast a secret ballot. Alternatively, voters cast mail-in ballots.
Caucuses provide forums for passionate supporters to sway other voters. Some caucuses ask voters to publicly declare their vote, while in others, voters cast a secret ballot after hearing speeches given on behalf of candidates. Caucuses are held on weekday evenings or weekends, and they typically last about two hours.
