Let's put this in perspective.
An Olympic High Jump judge watches a participant practice the day before at 7'9" and misses every time. And another participant clears 7'9" every time during practice.
The next day during competition the guy who missed 7'9" every time yesterday makes it and the guy who did missed.
America Idol judging says the guy who did best in practice wins even though he missed and the one who cleared 7'9" loses.
THIS SHOW IS RIGGED!
How old are you?
THis is a television show, for entertainment and everyone knows people can vote one time or hundreds of times. The how is successful, partly, because people enjoy the judges. The judges are frankly in one camp or another and make that clear. They even say so on other television shows. They at times predict who will be voted off.
There is an outside effort to affect the results i.e. vote for the worst.
The fact that you expect that this be like an olympic trial tells me you are either very naive or love to talk about “rigging”.
I think you may need to look at the entire context and grow up.