Questione giuridica chiave
Whether the appeal was admissible despite failure to exhaust cantonal remedies regarding recusal complaints.
Decisione estratta
No; the appellants could and therefore had to raise the bias complaint by cantonal nullity appeal before coming to the Federal Supreme Court.
Motivazione estratta
Under Art. 75 BGG, the Federal Supreme Court only hears complaints against last cantonal decisions after the cantonal instance has been materially exhausted. Recusal objections had to be raised as early as possible and, under Zurich procedure, were open to cantonal nullity review even for constitutional and ECHR complaints.