well unfortunately the voting system has a flaw, it's pretty easy for someone to sign up multiple accounts using different IP addresses. I noticed a big jump last night and I also noticed a few new members also signed up at the same time
and I also have a hard time understanding why so many people vote for the one and not the other, a few is understandable but 36? I also don't recall ever seeing a poll with so many votes. Keep in mind this wouldn't be the first time, and this time a real prize is involved so I think the threat is there.
But these are just observations
I do think that if someone really is cheating they need serious help, it's just a silly contest and you've got way too much time on your hands.