New Jersey is the newest state to have automatic voter registration, which is a system in which every adult citizen known by the government to exist is automatically registered, unless the individual declines. The New Jersey bill, AB 2014, was signed on April 17.
The other states are Alaska, California, Colorado, Georgia, Illinois, Maryland, Oregon, Rhode Island, Vermont, Washington, and West Virginia; also the District of Columbia has it. Petition validity is significantly higher in states with automatic voter registration.