How can I undo my voting?

Question

OK, I precipitated and would like to undo some of my upvotes.

For example, I upvoted the question all answers of:

• Infopath change Publish Location

But on an attempt of re-voting, I am getting:

• You last voted on this answer
  Jul 19 at 21:50
  Your vote is now locked in unless this answer is edited
  (click on this box to dismiss)

Is it possible to re-vote:

• to remove my vote
• to revert the vote (from downvote to upvote or from upvote to downvote)

after voting (downvoting or upvoting)?
and how?

Answer 1

As you have already in your question:

No, it is not possible to unvote or change your mind unless the post has been edited. This is due to questions as like to answers.

If you really want to change your mind and vote, you have to do a substantial (aka useful) edit to this post. Because then this post has been edited...

Usually there is a small amount of time after initial vote, where you can unvote. That means, during this time you can click again and your vote is gone. But I don't know how long this is.

Regarding the fact that this is a general feature for all SE-sites, your questions is "better placed" at SO-meta. And if you search there, you will find some long or short discussions.