This book investigates the evolution of the Democratic Party in the United States from its inception in 1789 to 1964. William N. Chambers, a historian specializing in American political history, draws upon extensive archival research and primary source documents to trace the party's ideological shifts, key figures, and electoral strategies over more than a century and a half. The work presents a comprehensive analysis of how the Democratic Party adapted to changing social, economic, and political landscapes, ultimately shaping the course of American governance.

As a historical analysis of a major American political party, Chambers' work is likely regarded as a foundational text for understanding the evolution of American political thought and practice. The detailed chronological approach and reliance on primary sources suggest a scholarly and comprehensive treatment of the subject. Its publication in 1964 positions it as a significant overview of the party's trajectory leading up to a pivotal election year. The book serves as an authoritative resource for students and scholars of American history and political science.