I hope Sharon leaves - it will prove a point about bad results on the show and maybe people will actually vote to save their favourite rather than thinking everyone else is doing the same - Kimberley and Alisha had quite a lot of support and were far better than the likes of Emily, Leon, Daniel and bores such as Andy, Hope and Futureproof.
I love Sharon (she's actually my favourite judge), but it might actually show the viewers that they need to get involved or will risk losing their favourite and potentially damaging the whole competition.