Bringing my thoughts over from the 'predict the scores' thread:
I think this week will be when we start to see the least popular of the 'favourites' in the bottom two, probably against one of the lower tier. I think that will either be Kimberley, as she's been there once before, or Denise simply because it feels inevitable to me.
As for the lower-tier - I do not think Nicky will have a bounce in him, as we're at the serious stage of the competition, the time for sympathy votes is over, and he's simply not as good as some of the others - even if he does score well with the charleston he is likely to be nearer the bottom of the leaderboard anyway. If Victoria ends up at the bottom of the leaderboard again, the public may not choose to save her from last place for a second week running, though.
So I'd be surprised if the dance-off wasn't Nicky vs any of those three.