It looks like Jay and Katie have sound public support, since Jeremy couldn't beat them to get out of the bottom two.
Helen will be high on the leaderboard I think, and has a crowd pleasing dance, so should be safe.
Jamelia is a cert for the dance off, I think. I don't see her pulling a miracle dance out oft he bag, and the competition is so tight now, I don't think there will be any sympathy voting any more.
I think it will be one of Anita, Georgia or Peter joining her. My guess is Anita (bleurgh cape faffing which she probably won't be good at, plus she's starting off the Gleb show by helping him into his jacket?! Please no!)
Eta: Peter looks the worst in training, I think, but I think the judges will keep finding ways to score him high.