Five states currently conduct all elections entirely by mail:
Colorado, Hawaii, Oregon, Washington and Utah.
At least 21 other states have laws that allow certain smaller elections, such as
school board contests, to be conducted by mail. For these elections, all registered
voters receive a ballot in the mail. The voter marks the ballot, puts it in a secrecy
envelope or sleeve and then into a separate mailing envelope, signs an affidavit
on the exterior of the mailing envelope, and returns the package via mail or by
dropping it off.