As above. They always say the phone lines close at 9 pm after which you may be charged but your vote dosent count. The celebrity audience are always the same on "both" nights which is a dead giveaway, coupled with the fact that, for example last week len said "blah blah .. the way john danced TONIGHT" and for example this week kates husband said she's been holding back and put all her effort into tonights dance so shes got nothing left (to go in a dance off later the same night)
Also giveaways. Also, tess's hair is always either straight "both" nights or curly "both" nights