I got the impression that Drake will pick the winners regardless of what the poll says.
I voted for what I thought were the best cards. I just was honest with myself and voted for the cards which I thought best fit theme and had mechanics that would fit into the game. If I voted only for my cards, then I'd be kind of denying that other people had good ideas.
At least that's how I thought about it.
I am a little surprised that my Chrono Assassin is doing ok considering that the nature of a assassin is neutral and the mechanic isn't particularly "villainous" but then, what does a villainous mechanic look like?
I'd think a heroic one would defend others or do something "good" like heal and/or protect.