If I answer a question, get an upvote, downvote, or 'accepted' answer, then edit the answer, what happens to the votes? I don't get enough upvotes to experiment, lolz.
Answers can be accepted or unaccepted at any time after the initial timeout period.
Votes are usually immutable after a short grace period (5 minutes, IIRC) unless the post is edited. If you edit your post, folks have a chance to change their previous votes to reflect the new content. As a result, making minor edits may or may not work in your favor--you can gain votes by improving your post, or potentially lose votes that were previously "locked in."
Your mileage can (and will) vary.