Just thought of this...Shahrukh Khan always wins all popular polls based on voting because he has more fans...which means there are more people who like him...so it makes sense that he should win a popular poll...
If we are talking about choosing an actor...then just because I am a fan of say Aamir Khan I will not vote for him unless I think he deserves to be voted for. I will never vote for him for Raja Hindustani for example...I would rather choose another actor who has done a better job. So the purpose of the poll is important. Is it a popularity poll or something more that requires some thought. I assume that most people do the same that they do not blindly vote for their favorites!