Hatred? Maybe at the beginning - or maybe I'm not reading the right threads - but Victoria, Louis, Lisa, Nicky and Michael seem to get much more reaction, good and bad, than Denise at the moment. I think she's too guarded and used to reality TV to give anything away and if they want to controversy they're going to have to look to other couples to get it. Denise is delivering very good dance, but she's also delivering exactly what people expected her to, so there's a lack of drama. Imagine the judges saving Denise in the dance off against anyone - mild eye-rolling at most from any in the audience who didn't agree. Now imagine the judges saving Victoria over almost everyone except Richard...
(ETA: Nothing against Victoria myself, sorry if that came across wrongly to anyone, but she seems the most controversial figure at the moment.)