The series documents Hughes' 1962 campaign for a Massachusetts seat in United States Senate as an independent candidate who stressed arms control and peace issues. Correspondence arranged alphabetically within five consecutive chronological periods comprises the bulk of the series. Mail from supporters and detractors of the campaign and inter campaign correspondence and memoranda are included. A history of the campaign written in 1964 provides an excellent overview. Newsletters, statements, press releases, speech texts, and administrative records complete the series.