The Cost of Voting Index (COVI) developed by the authors is a very useful resource that will benefit the field for years. In addition to developing this metric, the authors have convincingly demonstrated that voting restrictions are more likely in diversifying states and that efforts to expand access to the polls do not compromise election integrity. A must-read for students of voting and electoral reform." - Elliott Fullmer, associate professor of political science at Randolph-Macon College and author of Tuesday’s Gone: America’s Early Voting Revolution