I really do not understand why he is now the favourite to win. Yes he is a good singer but I find him quite dull. I always thought he was just one of those forgettable acts to fill up spaces and who would go out in the first couple of weeks, but it looks like he's set to win. But why is everyone voting for him!?
He was seen as cannon fodder initally and had no chance, but as the favourites performed worse and worse (or were shock bottom 2s) Marcus performed consistently well and was versatile so did well with each theme. Hence his popularity going up whilst others went down. This week is a bit of blip though because it was a weaker performance for him so it will be interesting to see whether he has gained a core fanbase (large enough to save him) or whether he was supported by floaters who will leave him this week for Amelia. I hope its the former