Dawn is a snake? Why, for staying loyal to the people she has an alliance with? I'm pretty sure she didn't make any of those idiots blab their plan to her, they just couldn't help themselves. Any of them should have seen that telling Dawn was at best risky and at worst stupid, not because of who Dawn is, but because of her alliance.
I think Dawn has a pretty good shot at winning actually. Better than Malcolm, Eddie, Reynold or Philip, certainly.