This guide covers judicial disqualification from the statutory grounds through appellate remedies. Part I sets out the two federal statutes and how they differ mechanically. Part II covers the objective appearance standard and the extrajudicial source doctrine. Part III covers the mandatory grounds, including financial interests and relationships. Part IV covers the constitutional floor set by due process. Part V covers timing, waiver, and remittal. Part VI covers procedure: who decides, mandamus, appellate review, and reassignment. Part VII covers judicial conduct complaints and how they differ from recusal. Part VIII covers state practice, arbitration, administrative adjudication, and the professional obligations that attach to filing.