I am unable to count the times I have wanted to change my vote in a poll on these forums.

I suggest that a re-vote is implemented. After you vote once, if you want to, you can cancel your first vote and change it.

This would help in a lot of ways, mostly being the suggestions forum, where people often won't vote incase the hero is tweaked, making the hero have an inflated number of positive votes. Also, if someone votes no, and the creator changes it, then he cannot change his vote to a positive, even if he now likes the hero.

Another example, the community hero contest. I personally wish I could have changed my vote. But I can't. Especially on something that seems as big as the contest, it would be nice.