>I don’t understand who this “next judge” is that you’re referring to.
If you do something slimy like dismiss a huge fraction of the juror pool because you don't like their demographics (vs for example having to dismiss the half of the population that had their opinion biased by the news or some other non-slimy reason to cause the same outcome) there will be an appeal and that appeal will be presided over by a judge.
If you do something slimy like dismiss a huge fraction of the juror pool because you don't like their demographics (vs for example having to dismiss the half of the population that had their opinion biased by the news or some other non-slimy reason to cause the same outcome) there will be an appeal and that appeal will be presided over by a judge.