I just voted on a review item and immediately realised that I had misread something and voted incorrectly.
I think it would be useful to be able to change such votes after the fact.
I understand that it is possible that your newly changed vote could be biased based on what you can now see of other people's votes however I would argue that users with enough reputation to vote should be able to vote without such bias.
Is it possible this could be something that could get in or is it a pipe dream?