Why did you put Kakuzu as a voting option?
he only does anything for Money (unless he is specific ordered to)
Now on the other hand had you added Hidan to this thread it would not have been a guarantied victory for Orochimaru
I don't consider Hidan evil, simply because he was raised to be the way he was.
and also he's crazy, and craziness isn't really a choice.
He thinks killing for his god is justice, he never forsaken any of his ideals which is what defines someone as evil
Obito wanted to protect people, now he will kill anyone to get his way
Madara wanted peace through trust, now it's peace through force and treachery regardless of the cost
Kakuzu was once belonged to a village, now he'll do just about anything for money
etc.
I've given an example of how Juugo couldn't control himself and was crazy when he first met Sasuke, but that didn't make him evil.