postmark

California law requires that ballots be counted as long as they are postmarked by election day and arrive at the registrar’s office within a week of the election.

Ballots must be postmarked by election day and received within seven days after the election.

For example, the state allows ballots to be accepted seven days after the election, but only if they are postmarked on or before the election.

"It will be of interest to two different kinds of people: Titanic specialists, of course, but also stamp collectors who like postmarks. This one, dated 'Cork 3.45pm April 11 1912' is exceptionally rare."

Mail ballots in California can be counted for up to a week after election day as long as they’re postmarked by Tuesday.