State Criminal Re-Enfranchisement Laws (Map)
Date:  08-15-2017

Interactive map shows which states are responsible for preventing 5.85 million people the right to vote
From The ACLU:

A patchwork of state felony disfranchisement laws, varying in severity from state to state, prevent approximately 5.85 million Americans with felony (and in several states misdemeanor) convictions from voting. Confusion about and misapplication of these laws de facto disenfranchise countless other Americans. Find the map here.