In the Roman Republic, the right to appeal (provocatio, as in “provocation”) from a magistrate’s summary use of power was regarded as one of the most important safeguards of liberty. The democratic force of the right to appeal survives today. (See, e.g., Griffin v. Illinois (1956) 351 U.S. 12, 18; Cassandra Burke Robertson, The Right to Appeal (2013), 91 N.C. L. Rev. 1219.) Indeed, it is often said that everything may be reviewed on appeal, but as in almost every aspect of law, there is an exception: In California, a trial judge’s refusal to be recused by way of a peremptory challenge is reviewable only by writ. (Code Civ. Proc., § 170.6.) Here are some practical tips for optimizing the chances of obtaining review.