The Venn Diagram Components Political Party represents the components of a political party. Political parties are typically composed of a party leader, who directs the party's activities; party executives, who may select the leader and perform administrative and organizational tasks; and party members who volunteer to help the party and donate money to vote for its candidates. This Venn Diagram Components Political Party also depicts different types of political parties. The Democratic Party and the Republican Party are the two most powerful parties. Other parties that can run candidates for president include the Reform, Libertarian, Socialist, Natural Law, Constitution, and Green Parties.