In 2012, Chile passed a major election law reform to adopt automatic registration and voluntary voting. Prior to this, Chile, like most Latin American countries, had a compulsory voting law. With this reform, Chile became one of only a few countries to ever move from compulsory to voluntary voting. Since the new law came into effect, two elections have taken place. The purpose of this research note is to review registration and turnout patterns in comparative historical terms, discuss the pros and cons of the election law reform, and to evaluate the 2012 and 2013 election outcomes with respect to voter turnout and election results. We describe the background of voter registration and turnout under the old system; discuss the debate surrounding the election law reform; and review the impact of the reform on turnout patterns.''[The government of Chile] expects wide-spread electoral participation from our citizens, and we are convinced that the next municipal election will be the election with the largest number of votes in the history of our country.'' -Sebastián Piñera, president of Chile (Estrategia, 2012).