Is there a way to find out which user voted on your answer or question? For anonymous users, they could just be replaced with "anonymous".
There's no way you can find out. And in all probability there shall be no way of this feature coming up in future too. For obvious reasons- it can easily lead to friendly voting and revenge voting if downvoted. And it's the same in real life voting too. Electoral Commissions go that extra mile to keep voter identity private.