who attends each party's national convention which is held in a presidential election year
United States presidential nominating convention Each party sets its own rules for the participation and format of the convention. Broadly speaking, each U.S. state and territory party is apportioned a select number of voting representatives, individually known as delegates and collectively as the delegation. Each party uses its own formula for determining the size of each delegation, factoring in such considerations as population, proportion of that state's Congressional representatives or state government officials who are members of the party, and the state's voting patterns in previous presidential elections. The selection of individual delegates and their alternates, too, is governed by the bylaws of each state party, or in some cases by state law.