This book explores the wide variation across states in convenience voting methods—absentee/mail voting, in-person early voting, same day registration—and provides new empirical analysis of the beneficial effects of these policies, not only in increasing voter turnout overall, but for disadvantaged groups. By measuring both convenience methods and implementation of the laws, the book improves on previous research. It draws generalizable conclusions about how these laws affect voter turnout by using population data from the fifty state voter files. Using individual vote histories, the design helps avoid bias in non-random assignment of states in adopting the laws. Many scholars and public officials have dismissed state election reform laws as failing to significantly increase turnout or address inequality in who votes. Accessible Elections underscores how state governments can modernize their election procedures to increase voter turnout and influence campaign and party mobilization strategies. Mail voting and in-person early voting are particularly important in the wake of Covid-19 to avoid election day crowds and ensure successful and equitable elections in states with large populations; the results of this study can help state governments more rapidly update voting for the 2020 general election and beyond.