If Misha does get the rebound vote, I think the bottom two will be Craig and Marcus.
Because, Janet has had this backing since the auditions (e.g Stacey Solomon) so she's likely to survive next week (as she did this week) just on that. Next, Little Mix will 'do something new' so alongside their strong fanbase already, they may pull in a few more supporters. Plus, One Direction backing them tonight - always a bonus! As for Amelia, I don't see it, but the public really seem to like her so that's why. Also to add that people may feel that Marcus and Craig are safe and thus not vote for them.
However, I think realistically Misha is likely to be in the bottom two again next week, regardless of the rebound vote. We'll see I guess