It's reall difficult to predict what is going to happen on Saturday; Len said as much last night.
The only way we, the GBP & the couples, get any idea of the level of public support for the couples is if they end up in the danger zone (i.e. the bottom two couples), due to the ones who are definitely staying in being announced in random order.
Colin & Erin/ Darren & Lilia have never been in this situation, so we don't really have anything to guage their performance in the public vote from, other than the fact that they have been doing well enough each week to be able to get through without enduring the heart-stopping tension of the "dum-dum-dum" music under the spot light.
James & Camilla, would appear to be very well regarded by the public, on the strength of last week's result. However, they admit that things could change & that this could have been a reaction to the judges slating him so badly last Saturday.
Zoe & Ian, tend to score best with the judges &, should they do so again will be safe; I believe someone has worked out that the top scoring couple cannot be voted out by the public. They did suffer a major hiccup last week, when they came second with the judges & 4th with the public, but, as with James & Camilla, we can't be sure if this is a true reflection of their level of public support.
Add to all this the fact that, as each couple is eliminated, those who had been voting for them on previous Saturdays will re-direct their votes (if they don't stop voting all together) & it becomes even more unpredictable.
All I can truly say for certain is that it sure does make for excitement; &make me glad that I didin't decide to become a bookie).