It's a public vote and people can vote for whatever reason they like, and none of the celebs should be made to feel guilty for staying in. You only win a bauble. It's meant to be a bit of fun. If people are enjoying Scott then good for him.
My Mum is voting for Judy because she loves her and Anton and their partnership. In the last two weeks, she's enjoyed Judy and Anton more than almost anyone and she wants to see what she will do next. She's also voting for Jake, who she wants to win. I'm sure she'll stop voting for Judy eventually, but at the moment that's who she likes. So she's right to vote for them. And people who vote for Scott presumably love him and Joanne.