This 2-hour segment from Iowa Public Television’s Caucus Iowa: Journey to the Presidency documentary explores how Iowa became the political epicenter and first major electoral event for the United States presidential nomination process. It includes recent interviews with political leaders, campaign staff and journalists from across the country on their memories of caucus campaigns in Iowa. (10 video clips available) 

Source

https://www.youtube.com/playlist?list=PLvrLtntb03x-SHBXROFjnKlBGZ1ImPubJ

Iowa Public Television