They decide on party platforms and nominate presidential/vice-presidential candidates.
The two major parties hold national conventions every four years, primarily for the purpose of nominating a candidate for President.
Platform :) bkm
the party platform
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The U.S. Constitution mandates a national census to be conducted every 10 years. This provides an important count of the population for purposes such as representation in Congress and the allocation of federal funds.
Political parties generally hold conventions during election years, typically in the summer before a national election. Conventions are used to nominate the party's candidate for president and to develop the party's platform.
delegates from each state select political parties'nominees for president
It is every 10 years.
Every four years that a President must be elected. so 2008, 2004, 2000, 1996, 1992, 1988 etc.
The national convention is one of the most important responsibilities of the national committee. Held once every four years, the national convention is where party members nominate their candidates for president and vice president of the United States. In addition, the Party's National Platform is voted on and adopted at the Convention. The platform is supposed to reflect the values and priorities of the Party and Americans in general; and serves as a guide for the party's Presidential candidate as well as its candidates at every level of the ticket.
Every 4 years for President Every 6 years for US Senate Every 2 Years for US House of Representatives
False - its every 10 years. The next is 2010