I figured out that the votes are stored by cookies through the site, so if you clear your browsers cache you can vote each time. Do you know how to do that on an iPad? The clearing, I mean, not the voting LOL
I do! You go to Settings. Then on the side, scroll until you see Safari. Tap Safari, scroll down and you should find "Clear Cookies and Data".
To sum it all up:
Settings>Safari>Clear Cookies and Data