NOTE: While it may well be too late for most voters who HAVE voted by mail, New Hampshire is 1 of the only 8 States that allow you a “re-do”:
…The process is a bit trickier in New Hampshire, where those who voted by mail can vote again if they show up to a polling place within the first hour it’s open or before their absentee ballots are processed.
(H/T: Fox News)