... Ballots are mailed out well ahead of Election Day, and thus voters have an "election period," not just a single day, to vote. Mostly-mail elections can be thought of as absentee voting for everyone. This system is also referred to as "vote by mail."
Eight states -- California, Colorado, Hawaii, Nevada, Oregon, Utah, Vermont and Washington and the District of Columbia"allow all elections to be conducted entirely by mail.
Two states -- Nebraska and North Dakota"permit counties to opt into conducting elections by mail.
Nine states -- Alaska, Arizona, Florida, Kansas, Maryland, Missouri, Montana, New Mexico and Wyoming"allow specific small elections to be conducted by mail.
Four states - Idaho, Minnesota, New Jersey and New Mexico"permit mostly-mail elections for certain small jurisdictions.
The four tables below show which states allow which types of mostly-mail elections. ...