Well, the show will probably gain them some fans as well. I really never have listened to them and saw the show channel hoping in week 2. I've become hooked and like some of their stuff. Depending on who they go with I might give them a try.
I think a woman will be in the final three. They have made a point of saying they are open to a woman winning it. So to eliminate all the women before the final three doesn't make much sense.
And yeah, they probably have their minds more or less made up, but anything can happen when given enough time.