This edited volume offers a critical, thorough, and interdisciplinary examination of arguments for eliminating the minimum democratic voting age. As children and youth increasingly assert their political voices on issues such as climate change, gun legislation, Black Lives Matter, and education reform, calls for youth enfranchisement merit further academic conversation. Leading scholars in childhood studies, political science, philosophy, history, law, medicine, and economics come together in this collection to explore the diverse assumptions behind excluding children from voting rights and why these are open to question. While arriving at different and sometimes competing conclusions, each chapter deconstructs the idea of voting as necessarily tied to age while reconstructing a more democratic imagination able to enfranchise the third of humanity made up by children and youth. Thus, this book defines and establishes a new field of academic study and public debate around children'ssuffrage. Chapter "The Reform that never happened: a history of children's suffrage restrictions" is available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.