I agree about liking some contestants more than you thought. That's happened to me multiple times.
It just came to me, that we have die-hard fans of various pros. (I know that makes some people get up in arms and it is said we vote for the "Star" and not the pro, but lets face it, for some of us the pros are more well known that the "Stars!)
So if you love (Or dislike a pro) does that make you want to give their "Star" and better chance? being honest? (And no, I'm not referring to any particular pro at this time. I just mean generally.)