No discernible pattern then.
Last season I was supporting Cherie then Tom. I could see the appeal in Austin, Lisa and Rachel to others though, but neither of the girls had a winning show dance (I was glad Karen alluded to that the other weak - I thought it was just me that had been underwhelmed by Vincent's choreography).
In Season 5 my favourites were Alesha and sometimes Gethin. Season 4 was Mark all the way. Season 3 was Colin and Zoe, and Season 2 was Denise and Aled. I've got better at picking winners along the way!
So why am I supporting Chris when there are two technically better dancers (which I presume is the undertone somewhere)? Well firstly Ali and Ricky are not flawless, although they are very good. But then neither were Alesha or Mark. For me there has to be a combination of technique and some kind of charisma which draws me in; the former is more objective and the latter highly objective. But the latter does matter - I knew that Emma Bunton, for example, was good, but I just didn't find her engaging.
Chris is slightly less technically good than people I've supported in the past, but I've got to the point where I just don't care. I've never enjoyed a partnership so much as I have his and Ola's - their Charleston had me grinning from start to finish. This season has had so much wrong with it that it desperately needs some sparkle, and for me that comes from Chris and Ola. If Jade or Zoe were still around, I might be supporting them. For me the ideal now would be a 3 person final with Chris, Ali and Ricky, with Ali or Ricky winning on merit. But as that's not going to happen I won't feel bad about voting to send Chris to the final if he's still entertaining me.