Originally Posted by drakhen:
“I don’t think there will ever be proper evidence, unless somebody who’s worked on the show decides to go to the press or does a tell-all book. I think most of the people who think the show is manipulated to some degree believe that there are several favoured acts and not just one (with the exception of last year). There is usually one favoured male, female, group and "joke" act. I'm not sure if that's even manipulation, but wanting to have a lineup of contestants that makes good TV.
The producers’ priorities also probably change as the series progresses. You mentioned Laura White above and I think her one is a good example. She was clearly a favourite initially but apart from the 1st live show, she didn’t do well in the voting. Suddenly the negative comments from Simon started about her appearance. Diana Vickers was also intended as a priority act, but she suddenly started getting negative comments as well from Louis and Simon at the same time as stories about her being difficult surfaced in the press. Anyway, this is all just my interpretation.”
It may be possible to make a case by going through the videos and pulling out key manipulations.
For instance calling someone dull and changing their staging from a golden glow in week one to grey and lifeless in their final week, then showing the gradual changes from week to week, to show it was done deliberately. Then back it up with the song choices, VT, judge's comments etc could be enough to build a case.
I always point out Janet Devlin as someone like Christopher Maloney was hated on by the show from the start, but their was an obvious change in Janet's treatment over the course of the show.
Plus things like how Janet was treated for forgetting the words to Little Mix forgetting the words and singing out of time would show a bias from the show.