Reasons for thinking its all one big con:
KP has a massive long time established fan base via Twitter, Facebook
She has a huge media presence even more so than other housemates i.e. Nadia
Whichever company has owned BB she has been asked over the years many years to go into the BB house and never gone in until now - they have headhunted her over the years knowing she will pull in viewers. Why go in now?
Added to that is the work she does for charities for children such as her son Harvey so thats a big vote there
She has always courted controversy and kept in the public eye till of late (say past 2 years)
She married Alex Reid after he came out of BB a winner - around 2 weeks later when they flew off to LA to marry
She has lots of readers votes via magazines like OK, Now etc
I think that in addition to the above that because Alex Reid won she would be assured she would win as there is no way that she would take second place to him with the acrimony between them in the past
The BBOTs body language said this and also added that she thought she should win (not the acrimony bit just the bit that she would go into the house to win and would want to win as she wouldn't want to lose face with Alex Reid - or words to that effect
Her editing on BBOTs has been positive towards the final and the Body Language Expert said she wanted her to win as she is just coasting along to the final and she admired that
Finally Emma Willis predicted that she would win at the start of BBOTs writing it down and placing it in an envelope - that was before KP went into the house and 10 days before we knew she was going in
Watching the show gave KP a great advantage over the others by going in later
She had prior history with Hopkins and the script was never that Hopkins would win. It was pre determined that KP would win by public voting, editing and thats how I see it