Did you guys know that it is possible to take back your vote and change it in 3 states?
In one of them, you can change it up to 3 times. And, in another state, you can take back your vote all the way up to 5:00 the day before the election.
Are you sure about that? Here in CA you can mess up your ballot and get a new one from the poll worker twice, giving you a total of three ballots, but the other two are "spoiled" (destroyed)
Nope, you can actually CHANGE your vote. It seems that in the three states the news was talking about (forgot which 3, but they are in the northern Midwest), they take your ballot and store it until election day when it is counted.
If it hasn't been counted yet, you can go back, grab your old ballot, and change it, replacing your previous vote. It doesn't give you more than one vote, just the option to change the one you had cast if you're still within the time limits.