It cracks me up the way some posters speak with such authority about the public vote, when they cannot possibly know in advance. For example, someone said earlier this week Kellie would "defo" come bottom of the popular vote, which probably meant they hoped she would. In fact she cannot have done so, because she and Georgia were tied by the judges but it was Georgia who was in the dance off. And no, I do not believe that the vote is rigged. I am a trusting soul! I wonder who the judges thought should have been in the dance off, actually, when they said to Georgia and Helen "Neither of you should be here". At this stage it could be anyone.
No-one can know the outcomes you are right, it is merely a lot of educated guesswork. Thankfully we don't know the outcome though, better to be surprised at the unpredictable.