Primary Elections

What is a primary election and how does it work?

Are presidential primary elections held in every state?

Is there a calendar with deadlines for U.S. elections?

Can a U.S. citizen living outside the country vote in primary elections?

How can I register from overseas for my state's primary election?

Do I need to identify my party affiliation to vote in the primary election?

If I'm registered as an Independent, Green, Libertarian, or other third party, can I still vote in my state's primary?

I want to change my party affiliation. How can I do that?