[GeronL]

and how do they keep those who mailed in ballots from turning up on election day?

[lonestar]

I worked several years ago canvessing the vote and there was a method in place to guard against double voting...that I don't remember.

Absentee voting...the more common name...I think is how they get the ballots to vote for people in nursing homes.

I have no clue how "Photo ID" figures into absentee voting.