Just because you're not old enough to vote, doesn't mean you can't add your 2 cents.
In the years preceding a presidential election, many candidates announce their intent to run. But by mid-September of election year, the race focuses primarily on the candidates chosen by the Republican and Democratic parties.
CNN Student News presents a single-page explanation of how the political parties choose their candidates, and the difference between a caucus and a primary.
For elementary and middle school students, this election glossary from Enchanted Learning defines seventy-five terms from "absentee ballot" to "voting machine."
Since federal law doesn't specify how states choose their delegates, each state has its own procedure.
Project Vote Smart, an independent organization that gathers the political records of incumbents and candidates, hosts this one-page introduction to conventions, caucuses, primaries, and delegates.
This informative page, published by the U.S. Department of State, defines sixty political terms such as "hard money/soft money", "coattails" and "lame duck."