If I gather correctly, you mistakenly checked the ++ or -- button and didn't want to cast said vote, and you are bothered by the fact that you can't re-click it to unfill the ++ or -- circle. Just refresh the page and it's gone :o). Or of course, you can enable the 'NULL Vote' option as others have suggested.
in reply to Re: Re: New Voting Option - UnVote
in thread New Voting Option - UnVote