As I said before, the voting process leaves a lot to be desired. No one can convince me that the vote wasn't decided in advance. The producers wanted Carrie to win. Simon told Carrie that her accomplishments put her over the top (can't remember the exact words, but I remember Simon's self-satisfied smug face when he said it.)
Da votin' is rigged, IMO.
Simon also told Bo previously that this contest was his to lose.