Answer:
Because they felt that the laws were not right to be interpreted or applied in their cases.
Step-by-step explanation:
The losing parties in civil trials and convicted criminals seek to involve the federal appellate courts in their cases because they feel that laws were incorrectly interpreted or applied. By taking the case to a new court with different magistrate judges, they are expecting these last ones to revise the whole case and determine that the previous court applied or interpreted the laws wrongly, therefore changing or dropping the conviction. Federal appeals courts are also known for acting like mediators between the parties, which could be of great favor for the losing parties.