Americans once gathered on the first Tuesday after the first Monday in November to pick the nation's leaders. Election Day was a day of civic engagement when neighbors met at the polls and then cast their ballots. In the past twenty-five years, however, America has undergone a revolution in voting unlike anything it has experienced in the first 200 years of its history. We have created a system of many mini-election-days leading up to the main event. Today nearly a quarter of Americans vote before Election Day, either by absentee ballot or at early voting places. In 1980, only one in twenty...