For more than a century, the mechanical lever voting machine stood in polling places across the United States. Unwieldy, unloved, and eventually discarded, it rarely attracted admiration. Yet as Bryan Pfaffenberger shows, this "lowly lever" shaped American democracy in profound ways. Machining the Vote traces the lever machine's rise from the contested elections of the late nineteenth century through its dominance in the twentieth century and its eventual demise in the era of digital voting. Pfaffenberger begins with the political crises that prompted inventors such as bank safe maker Jacob Myers to design a new system combining mechanical innovation with new election laws. He follows the fierce patent battles, corporate struggles, and legal fights that turned the lever machine into a near-national infrastructure, closely intertwined with New York election law and urban machine politics. Voting machines, Pfaffenberger argues, are political artifacts: they embody legal assumptions, administrative procedures, and cultural values. Lever machines promised to eliminate fraud, prevent overvoting, and enforce uniform procedures, because the machines were so transparent; technicians and precinct officials could easily recognize tampering. A former designer of bank vaults during the heyday of daring bank robberies, Myers understood the need to develop a security process capable of identifying exploits. Their gradual replacement by electronic systems-often without equivalent legal and procedural safeguards-set the stage for new controversies, culminating in the turmoil of the 2000 presidential election. Bringing together political history and science and technology studies, Machining the Vote offers a cultural analysis of how technologies are selected, stabilized, and abandoned. At a moment when election integrity is fiercely debated, this book provides essential historical perspective on how machines-and the laws surrounding them-shape the practice of democracy.