The trouble is in all these "vote for your winner" type shows - things come into it other than what the show is about....
People pick up their phones to vote for many reasons
They are a huge fan of X (or their pro dancer) - eg Anton/ Artem/ Pasha/ Natalie etc
They think the judges were unfair to X - anyone the judges put down
They thought that X was better than Y who scored higher marks - eg Scott this year - Austin in the past
They liked the costume/ music eg Susanna and Kevin's Paso last year
X's routine made them laugh eg Chris Hollins Charleston
They think the judges have a pet who is being over marked - eg Zoe Ball, Lisa Snowdon
They like the character x plays in their favourite soap/ drama - any of the soap drama stars
They will vote for anyone from their favourite soap/ drama; and after all that.....
They vote for X because they were the best dancer
Bear in mind that watching Strictly is the only knowledge most of the audience have of ballroom dancing. Most of the viewers couldn't tell a fleckerl from a whisk or a lock step, and they go on the routines they liked (for whatever reason), made them smile or whatever.... add in the fact that 3 of the judges (including, ironically, the one whose opinions are regarded the highest), have little or no knowledge or experience of ballroom dancing techniques, and are often led by totally WRONG critiques, and the show becomes an entertainment show based on dancing rather than a real competition.
Given the different levels of ability in the celebs, it's not fair to judge someone like Jake or Natalie Gumede, be they simply a natural or a ringer, on the same basis as Judy or Jennifer. After week 1/2 they CAN be judged on the improvement in their performances relative to the week before,
This year, Jake, Pixie and Frankie are rightly at the top of the leaderboard at the moment, but their scope for improvement is low compared to someone like Judy Jennifer, Tim or Scott, who have the potential to improve drastically dependent on when they conquer their nerves/ drop their inhibitions/ embrace the dance. It's interesting to note that those at the top of the board are all youngish musicians, actors or presenters used to performing for an audience, those at the bottom are those who are older or not performers. Susanna last year was a classic example of someone who just went for it.... She wasn't the best dancer by a long chalk, but she just threw herself into strictly and didn't care how much of an idiot she may have looked, and got a long way with the judges and viewers because of that attitude.