Attendance

• Usually held at large public halls, such as town halls, all voters registered with a party within the caucus district may attend. In practice, most of the attendees are political activists.
  
  

Procedure

• At a caucus, attendees form groups according to their preferred candidate. They try to persuade undecided voters to join their group. At the end of the session, a voting mechanism is used, depending on the state and the party. Some use a show of hands, others a paper ballot.
  
  

Mixed Caucus System

• Approximately a third of U.S. states choose candidates by means of a caucus. Others, for example, Texas, use a mixed system of both caucuses and primary elections to elect their preferred candidates. Attending a caucus is time-consuming for voters and it is thought that a combination of voting process yields the most effective result.