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Defense Ready to Challenge Mid-Trial Conviction Threshold Change

Vice President Sara Duterte's legal team signaled it may escalate the impeachment trial to the Supreme Court if the Senate-based impeachment court alters voting requirements for conviction during proceedings.

LSN Philippines · 23 September 2026

Defense lead counsel Michael Poa warned that adjusting the conviction threshold mid-trial could trigger a constitutional challenge at the highest court. The statement came as the impeachment trial of Vice President Sara Duterte continued before the Senate sitting as an impeachment court.

Poa's position underscores the defense's concern that modifying voting rules after proceedings have begun could undermine the fairness of the proceedings and violate established legal procedures. Such changes during an active trial could fundamentally alter the burden of proof or majority requirements needed to remove the Vice President from office.

The impeachment case has drawn intense scrutiny regarding procedural matters, with legal experts debating the constitutional framework governing conviction thresholds in impeachment trials. The defense's willingness to seek Supreme Court intervention reflects the high stakes involved and the party's determination to ensure compliance with constitutional requirements.

The trial continues with both prosecution and defense presenting their respective cases before senators who will ultimately determine the Vice President's fate. Any procedural changes remain subject to the Senate's voting procedures and constitutional interpretation.