[robb]

Yes I agree the votes shouldn't roll over.......but the BEEB would then be faced with refunding millions of voters (2 million I heard).
The problems they have got themselves into are explained by mazedsalv above.
Furthermore, I gather they are rolling over the JUDGES SCORES. IF Tom had only one point from them, and ,say, one point from the public, how the hell could he NOT finish bottom on Saturday?? THE COMBINED SCORES COULD BE 6-5-2!! He would be too far adrift AGAIN FOR THE PUBLIC TO SAVE HIM. I don't think there is a dance-off either this week.
THE JUDGES HAVE CREATED THIS PROBLEM BY OVERMARKING THEIR PET, RACHEL, AND ALSO LISA, TO TRY AND MAKE SURE TOM FINISHED IN THE DANCE-OFF. THEN THEY COULD HAVE GOT RID OF HIM.