After seventy-two arduous years, the fate of the suffrage movement and its masterwork, the Nineteenth Amendment, rested not only on one state, Tennessee, but on the shoulders of a single man: twenty-four-year-old legislator Harry Burn. Burn had previously voted with the antisuffrage forces. If he did so again, the vote would be tied and the amendment would fall one state short of the thirty-six necessary for ratification. At the last minute, though,...