In the modern US political system the main system that political parties use to nominate candidates are primary elections, however, caucus' are also used in certain states. In a primary the vote is cast by a secret ballot in order to decide the candidate of the party. In a caucus members of the party meet in an open meeting and discuss who they will select to be the party candidate for that state.
A. Primary ;
The main system political parties in the U.S. use to nominate candidates is primary elections. Primaries can be closed, open, or top-two, allowing party members to vote for their preferred candidate. While caucuses are also used in some states, primaries dominate the nomination process.
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