Every four years citizens of the United States go to the polling places in November to cast their vote for the next President of the United States. But few realize all that has gone in to the selection of one or both of the main candidates on the ballot. They've heard of primaries and caucuses, but aren't really sure what the difference is. And why are some delegates pledged and some unpledged? What makes a primary closed or open? And what does a candidate need to become his or her party's nominee in November.This little book will explain all of that and more. It even includes a great little activity for teachers to use with their students to help explain some of the differences.