I down-voted an answer to this question. Not the greatest question, sure, but the answer was still way off. The answer was soon after deleted, and I got my 1 rep point back. I logged on later and saw I had lost the rep point again. I checked the question, and the answerer had re-posted a much better answer. I wanted to fairly rescind my down-vote but I got the "It's been 5 hours, you can't do anything unless the answer is edited" warning.
So, I don't understand why my down-vote seems to have "come back" when the question was re-posted? I am thinking that the user must have un-deleted the question, and then edited it? If that's the case, why can I not take back my downvote?
w3schools
should be downvoted to oblivion