It doesn't really matter for my choice, Doctor Fate, because he's so far down in the poll. But to illustrate the point let's say I'm a fan of Black Canary, Hawkgirl and Black Adam--which as of my posting are at 22, 21 and 21 respectively--but let's assume that I like Hawkgirl more. If I vote for all three then they all go ahead by 1--23, 22, and 22. But if I just vote for Hawkgirl that helps her because now it's 22, 22 and 21--Hawkgirl gets to tie Black Canary and not lag behind.
So if I am being strategic in my voting and I want my most favourite to go ahead, it's better (in this case) to vote for one rather than three. This seems like John Nash (A BEAUTIFUL MIND) level thinking. It hurts my head.