PS the problem with the voting is that the viewers do not vote to evict the worst one. Someone who is quite good might lose because they are everybody's second favourite - i.e. not enough votes from people who think they are the best one. My theory is that most voters thought that Sam was safe, so they voted for Michelle (to keep out Mark) or for Mark (to keep out Michelle).
we quite often end up with governments that the majority of people didnt want for exactly the same reason, voting is rarely a very satisfactory way of deciding anything