I really kind of dislike polls. They are never truly representative and never will be unless people actually tell the truth rather than responding about wheat they think should be the 'right' answer or the answer that makes them look the best. And then you have a whole and very large section of the population that refuses to take part in polls: another factor in making any results meaningless.
In a case like this, it's about which sort of fans can be bothered to vote. It's like these online polls where an Internet friend can win a competition due to a (for example) photo they have submitted to a competition. Then it's rarely about how good the photo is, it's more about how many Internet friends you have. And that's how it should be. I don't think anyone should take these sort of polls too seriously. The magazines tend to do them because they get a good response and people get annoyed when something they consider to be rubbish, gets lots of votes.
In case you are wondering - I've been watching a lot of Charlie Brooker on YouTube recently.