About the film
Primary is a 1960 American direct cinema documentary film directed by Robert Drew about the April 5, 1960 primary election in Wisconsin between Democratic Party candidates John F. Kennedy and Hubert Humphrey. They were vying to be chosen as their party's nominee in the upcoming general election.
The film covers the last hectic days and hours of the primary campaign.
From the film's Wikipedia article (CC BY-SA 4.0).