Rule 63-I.Bias or Prejudice of a Judge or Magistrate Judge
Group VII: Judgment · Last amended 2017 · Last verified July 14, 2026
Full Text of Rule 63-I
Comments
Stylistic changes were made to this rule to conform with the 2007 amendments to the Federal Rules of Civil Procedure.
Rule 63-I is substantially identical to 28 U.S.C. § 144.
Plain-English Summary
Rule 63-I gives a party a concrete tool for challenging a judge's impartiality. If a party files a sufficient affidavit stating that the judge or magistrate judge assigned to hear a matter holds a personal bias or prejudice — either against that party or in favor of the opposing party — the rule does not leave the decision to that same judge. The judge must proceed no further, and another judge or magistrate judge is assigned under Rule 40-I to take over the proceeding. The mechanism mirrors the federal judicial-recusal statute, 28 U.S.C. § 144, which the District's courts have long looked to for guidance.
The rule sets real requirements for the affidavit so it cannot be used to delay a case on a whim. It must state the specific facts and reasons behind the belief that bias or prejudice exists, not just a bare accusation, and it must come with a certificate from counsel of record affirming that the affidavit is filed in good faith. Timing matters too: the affidavit must be filed at least 24 hours before the hearing on the matter, unless the party filing it can show good cause for filing later.
Because the rule takes the decision out of the challenged judge's hands entirely — reassignment follows automatically from a sufficient, timely affidavit rather than from that judge's own ruling on the accusation — it functions as a genuine check on the appearance of partiality, not merely a request the sitting judge can brush aside.
Frequently Asked Questions
How do I ask a judge to step aside because of bias in a DC Superior Court case?
Rule 63-I(a) requires filing a sufficient affidavit stating that the judge or magistrate judge holds a personal bias or prejudice against you or in favor of the opposing party. Once filed, the judge must proceed no further and another judge is assigned under Rule 40-I.
What has to be in the affidavit?
Rule 63-I(b) requires the affidavit to state the specific facts and the reasons for the belief that bias or prejudice exists, and it must be accompanied by a certificate from counsel of record stating the affidavit is made in good faith.
Is there a deadline for filing a bias affidavit?
Yes. It must be filed at least 24 hours before the time set for the hearing on the matter, unless good cause is shown for filing later.
Does the challenged judge decide whether to step aside?
No. Once a sufficient affidavit is filed, Rule 63-I(a) requires the judge to proceed no further, and reassignment to another judge or magistrate judge under Rule 40-I follows automatically.
Is DC's recusal-for-bias rule based on a federal statute?
The official comment notes that Rule 63-I is substantially identical to 28 U.S.C. § 144, the federal statute governing recusal of a judge for personal bias or prejudice.