Change Vote?

I looked back through a few pages and didn’t see anything in regards to this. Is there any way to change your vote after you’ve clicked one of the buttons?

Let’s say I accidentally vote something up when I meant to vote it down. In my head, I want to click on the up vote button again to “undo” or remove my vote so I can click on the other button. This doesn’t seem to be the case, and there isn’t any visible button for a user to clear their vote.

Is there anything built in to achieve this?

Thanks!