Simon & Schuster will publish 107 DAYS, a memoir by former Vice President Kamala D. Harris, on 23 September 2025.

The book chronicles Harris's 2024 presidential campaign, offering a candid, behind-the-scenes account of what she describes as the shortest presidential campaign in modern US history.

Harris reflects on the 107 days she spent crossing the country and engaging with voters, aiming to share lessons learned and insights into the political landscape. The narrative combines personal reflection with high-stakes political drama.

Jonathan Karp, CEO of Simon & Schuster, called the memoir one of the publisher's most compelling political nonfiction titles. Dawn Davis, senior vice president and publisher of 37 Ink, an imprint of Simon & Schuster, highlighted its unique perspective on critical decisions and team dynamics during a pivotal time.

Simon & Schuster acquired global, audio, and first serial rights from Creative Artists Agency. The book will be published in multiple formats, including hardcover, ebook, and audiobook, with Harris narrating. International editions will be released in the United Kingdom, Canada, Australia, and India.