UPDATE
The voting this year WON'T be in the forums. Instead, I've created my own voting system, which has all the votes on the battles page itself. The benefit is that you don't have to bounce between the battles page and the forums to vote. Also, it hides the total votes, this way you can't be influenced by others' votes.
SCREENSHOTS
Here is what the popup will look like when you click on the "vote" tab:
View attachment 3550
Here is what it will look like once you've voted:
View attachment 3551
CHANGING VOTES
If you wish to change a vote, you can't "unvote" by clicking the green "voted" box. Instead, just click the other person's "vote" box. It will remove your original vote and add the new one instead.