Election Obligations & Standards Database
"Methods of registration, therefore, may vary from country to country depending on local circumstances, but should always seek to minimize the potential obstacles for the voter to register."
Norwegian Helsinki Committee: Manual on Human Rights Monitoring: An Introduction for Human Rights Field Officers
, p. 11
Manual on Human Rights Monitoring: An Introduction for Human Rights Field Officers
A voter list may be reliably established through a variety of acceptable methods, including periodic list, continuous list, or civil registry.