TNO. Nice to see you posting again.
Sadly, with any voluntary poll, it all depends on who wants to call in.
Just like Australian Idol, if you are friends with or have something to do with one of the contestants, you'll vote your heart out. This is probably the case with this poll. Many staff & their many friends would have called in, I imagine, which would put such a slant on the voting. Of course, there is no way of confirming this, as it has no way of measuring the voters demographic.
Admittedly, it was a nice set of numbers, but I'd rather have seen this result from a poll of politicians!