Lol. From my experience with polls in the past in various music artist forums cheating a poll like this is tad easy. You just need to take some time and create a macros in browser. Internet Poll is reliable only if allowed only one vote per visitor. And the visitor should be registered or logged in with registered email id or phone. Only then its reliable. But still some one can create multiple accounts and vote. But it's difficult that way, so it won't cause too much difference.
Why don't you start a thread here and ask people to vote by commenting their vote. You will get an almost accurate result then. (Ask them not to comment anything else.)