Early and absentee voting are now options in most of the country, and roughly a third of all Americans casting a ballot in the 2012 presidential race are expected to do so before Nov. 6, Election Day. Here’s an early voting calendar and state deadlines for voter registration.
Absentee ballots - All guidelines / deadlines here refer to non-military absentee voting.
"No-excuse" ballots - In states that offer this, any legal voter can request an absentee ballot, without meeting special criteria. (By contrast, some states offer absentee ballots only to voters who meet a certain criteria — for example, those who will be away from their polling location on election day, or who have an illness or disability.)