Just as the polls opened on November 5, 1872, Susan B. Anthony arrived and filled out her "ticket" for the various candidates. But a poll watcher objected, claiming her action violated the laws of New York and the state constitution. Anthony protested that as a citizen of the United States and the state of New York she was entitled to vote under the Fourteenth Amendment. The poll watchers gave in and allowed Anthony to deposit her ballots. Anthony was arrested, charged with a federal crime, and tried in court. The author here provides the first book-length engagement with the legal dimensions of that narrative and, in the process, illuminates the laws, politics, and personalities at the heart of the trial and its outcome.