Many people following the US Presidential election may be confused about how a candidate becomes the nominee for there party. In general it is the same for both the Democratic and Republican party, the person with over 50% of the delegates at the parties national convention wins the nomination. The process for gaining delegates is through primaries, caucuses and gaining the support of unpledged delegates.
What is a Primary
A primary is an election run by state and local governments that determines how many delegates each candidate gets to take to convention. There are different types of primary elections as well as different ways of splitting up the delegates from the results of the primary. Most states have what is know as a binding primary, in which the results of the election legally bind some or all of the delegates to a particular candidate.
To be able to vote in a primary in most states you need to be a registered member of a party and you can only vote in that parties primary, this is known as a closed primary. Some states however run a semi-closed primary, where independents can vote in either primary or open primaries, where any voter may vote in either primary.
In the Democratic party delegates are given based on a proportional representation system only. In the Republican party however different states use different methods including winner-takes-all based on state, winner-takes-all based on congressional district, proportional representation or a combination.
What is a Caucus
Different states have different processes in deciding how a caucus is run. In general however a caucus in a meeting of party members to decide on who they are going to support. Most states do not run a caucus but those that do either run a caucus and a primary or just a caucus. The most common form of caucus is where delegates are selected to go to state or county convention and then vote on delegates to the national convention.
What are Unpledged Delegates
Unpledged delegates or Superdelegates, as they are know in the Democratic party, are party member or elected officials, who are automatic delegates to the national convention and can put there vote and support behind any candidate they wish. If the number of binded delegates between two candidates is close then these delegates will determine who the nominee is.
The Numbers Game
Each state gets a different number of delegates and is based on its number of congressional districts (population). Some states also receive extra delegates because they have elected officials, party leaders and/or good past performances in Presidential elections.
To win the Democratic nomination a candidate currently needs 2025 delegates out of a total 4049. Of the 4049 there are 3253 pledged delegates and 796 unpledged (superdelegates).
To win the Republican nomination a candidate currently needs 1191 delegates out of a total 2380. Of the 2380 there are 1917 pledged delegates and 463 unpledged.