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Rule 63.Judge’s inability to proceed.

Last verified July 1, 2026

In one sentenceRule 63 lets a different judge finish a hearing or trial if the original judge becomes unable to continue, so long as the successor certifies familiarity with the record and no prejudice to the parties.

Full Text of Rule 63

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If a judge conducting a hearing or trial is unable to proceed, any other judge may proceed with the hearing or trial upon certifying familiarity with the record and determining that the action may be completed without prejudice to the parties. In a hearing or a nonjury trial, the successor judge must, at a party’s request, recall any witness whose testimony is material and disputed, and who is available to testify again without undue burden. The successor judge also may recall any other witness.

Amendment History

Promulgated by R-16-0010, effective January 1, 2017.

Plain-English Summary

Judges sometimes cannot finish a case they started — because of illness, recusal, or another disruption — and Rule 63 lets a successor judge step in without forcing the parties to start over. The new judge must certify familiarity with the existing record and determine that the case can be completed without prejudicing either party. In a hearing or a nonjury trial, if a party asks, the successor judge must recall any witness whose testimony is both material and disputed and who remains available without undue burden, and the judge also has discretion to recall any other witness even without a request.

This rule strikes a balance between judicial efficiency and fairness: it avoids the expense and delay of a full restart while preserving each party's ability to have disputed, material testimony evaluated directly by the judge who will decide the case.

Frequently Asked Questions

What must a successor judge do before continuing a case?

Certify familiarity with the existing record and determine that the case can be completed without prejudice to the parties.

Can I insist that a witness testify again in front of the new judge?

In a hearing or nonjury trial, you can request that the successor judge recall a witness whose testimony is material and disputed, if that witness remains available without undue burden.

Does Rule 63 apply to jury trials?

The rule allows a successor judge to take over any hearing or trial, but its specific witness-recall provision is directed at hearings and nonjury trials.

Source & verification. The rule text and History are reproduced verbatim from the official Arizona Rules of Civil Procedure (Ariz. R. Civ. P. 63). Prescribed by the Supreme Court of Arizona (Ariz. Const. art. 6, § 5). The plain-English summary is original and written by us. Last verified July 1, 2026. · Official source
Also known as: substitution of judge rule