http://www.dailykos.com/story/2015/07/08/1400171/-New-report-finds-sick-American-state-democracies
"In analyzing accessibility of the ballot, this report identifies two key findings: first, the highest ranking states in this category have significantly higher voter turnout—on average, almost four percentage points higher than the lowest ranking states; second, that states previously covered by Voting Rights Act preclearance requirements perform poorly in this category—none of the nine states that were covered in total by preclearance requirements receives a grade higher than a D+ in this accessibility of the ballot measures."
