Sam has connection issues, and some people moaned about her not being karaoke last night, and on top of last week being horrific she'll need a miracle to not be in the bottom two.
Ryan despite improving over the last two weeks and the show finally finding his sound, I don't know if it's too little too late for him as he spent the first half of the series being dreadful.
Emily was the worst on the night by a mile, so if she does go in there it wouldn't surprise me, especially considering that song choice seems to be a bit cursed for any act that sings it on the show.
And a dark horse to go back in there is Saara, however I think that the public will actually judge on the night there and vote her through.
My guess will be a Sam vs Ryan bottom two.