In a society of completely honorable people this would be a wonderful convenience and should be adopted. However, we are not so far removed from dishonest operation of the election process that we should ignore history. How easy would it be for political bosses to collect the absentee ballots, fill them out and then have the "voter" send them in?

Johnson stole the primary for senator in Texas with graveyard votes. Chicago stole the election for Kennedy. Let's not make it easier for the thugs.