Duterte's absence won't halt impeachment trial as Senate proceeds under established rules

Silence in an impeachment trial is its own kind of testimony.
Prosecutors warned that Duterte's absence would leave her defense unheard against presented evidence.

In Manila, the Philippine Senate opened its doors as an impeachment court against Vice President Sara Duterte, setting in motion a constitutional reckoning that will unfold whether she chooses to face it or not. The rules of the chamber, long established, ensure that silence is not escape — a default plea of not guilty stands in for any absence, and the trial continues regardless. What hangs in the balance is not merely her current office, but the possibility of permanent exclusion from public life, a consequence that resignation alone cannot dissolve. The proceedings arrive against a backdrop of institutional turbulence, and their continuation represents, for some, a return to the steadier rhythms of democratic accountability.

  • The Senate formally convened as an impeachment court, transforming a legislative chamber into a tribunal with the power to end a political career permanently.
  • Duterte's potential absence creates a legal vacuum her opponents are eager to fill — unrebutted evidence, prosecutors warn, is evidence that effectively goes uncontested before senator-judges.
  • Even resignation offers no clean exit: the penalty of perpetual disqualification from public office survives any departure from her current position, keeping the stakes existential.
  • Her legal team has signaled they will engage, promising to file a response and participate in what they acknowledge is the constitutionally appropriate forum.
  • The trial opens just days after gunfire echoed through the Senate complex during a separate political crisis, lending the impeachment proceedings an almost deliberate quality of institutional restoration.

The Philippine Senate convened as an impeachment court on a Monday afternoon in May, formally opening proceedings against Vice President Sara Duterte. A procedural question immediately arose: what if she simply refused to appear?

The answer was already written into Senate Resolution No. 39, a framework adopted in 2011 governing impeachment trials. If the accused fails to appear or file an answer, proceedings continue regardless, with a 'not guilty' plea automatically entered on her behalf. Senate President Alan Peter Cayetano confirmed the resolution would apply. Duterte was given ten calendar days to respond to the summons, but her compliance — or lack of it — would not determine whether the trial moved forward.

Prosecutors were blunt about the consequences of silence. Lead prosecutor Gerville Luistro warned that any evidence presented without rebuttal would stand uncontroverted before senator-judges, making acquittal difficult to justify. Luistro also argued that even a resignation would not end the trial's relevance: while removal from office would become moot, the second possible penalty — perpetual disqualification from holding public office — would remain very much alive. A conviction would bar Duterte from ever seeking elected office again.

Duterte's lawyer, Michael Poa, indicated the defense intended to participate, promising to file an appropriate response in accordance with the Constitution. Other legislators framed the moment in terms of due process and historical weight. Representative Leila de Lima called it Duterte's chance to face and answer the accusations against her. Senator Panfilo Lacson, now sitting as a judge in the trial, noted the striking contrast between the gunfire that had disrupted the Senate the previous week — when Senator dela Rosa barricaded himself in the chamber to avoid ICC-related arrest — and the measured, procedural atmosphere of the impeachment opening. The machinery of accountability, Lacson suggested, had reasserted itself. The chamber's doors would remain open throughout. A two-thirds majority on each article would be required for conviction. The question now was whether Duterte would engage with the process or leave it to proceed without her.

The Philippine Senate convened as an impeachment court on a Monday afternoon in May, formally opening proceedings against Vice President Sara Duterte. The machinery of constitutional accountability had begun to turn. But a question hung over the chamber: what if she simply did not show up?

Under Senate Resolution No. 39—a procedural framework adopted in 2011 that governs how impeachment trials unfold in the chamber—her absence would not stop the trial. The rules are explicit on this point. If the accused fails to appear in person or through counsel, or refuses to file an answer to the articles of impeachment, the proceedings continue anyway. A "not guilty" plea is automatically entered on the defendant's behalf. Senate President Alan Peter Cayetano confirmed that this resolution would apply to Duterte's case, supplemented by the Senate's own rules and the revised Rules of Court where applicable.

The practical effect is stark. Duterte was ordered to file her answer within ten calendar days of receiving the summons. The Senate sergeant-at-arms was directed to serve her with written notice and a copy of the articles of impeachment. But whether she responded or appeared was, in a legal sense, immaterial to whether the trial would proceed. The Senate had already voted—257 House lawmakers had approved the impeachment articles the week before—and now the upper chamber would hear the case regardless.

Yet prosecutors warned that her absence would carry a steep strategic cost. Gerville Luistro, the lead prosecutor from the House and a Batangas representative, told reporters that Duterte would be at a severe disadvantage if she or her legal team skipped the trial. Evidence presented by the complainants would stand unrebutted and uncontroverted. Without a defense case to weigh against it, senator-judges would find it difficult to justify an acquittal. "It's very hard to conceive how you will consider the defense of the respondent VP if not a single evidence is presented," Luistro said. The implication was clear: silence could be read as concession.

Luistro also raised a second dimension to the trial's significance. Even if Duterte resigned from office before a verdict, the Senate should continue the proceedings. The impeachment carries two penalties: removal from office and perpetual disqualification from holding public office. Resignation would render the first penalty moot, but the second would remain consequential. A conviction would bar her from ever seeking elected office again. For that reason alone, the trial had to reach completion.

Duterte's legal team, represented by lawyer Michael Poa, signaled they would participate. Poa said his client would answer the allegations against her in what he called the "appropriate forum"—the Senate itself—and that they would "comply and file the appropriate response in accordance with the Constitution and applicable rules." The defense was preparing to engage.

Other voices in the chamber emphasized the gravity of the moment. Terry Ridon, a Bicol party list representative, called the impeachment trial the "final opportunity" for Duterte to mount a complete defense. Leila de Lima, a Mamamayang Liberal representative, stressed that the Senate must act with impartiality, hearing the case free of bias and regardless of political affiliation. "This is due process for Vice President Sara," she said. "So this is her chance. It is time for her to face and answer the accusations against her."

Senator Panfilo Lacson, now serving as one of the judges in the trial, called for public vigilance. His remarks carried weight given the turbulence of the preceding week. A shooting incident had erupted in the Senate involving members of the sergeant-at-arms and National Bureau of Investigation agents. Senator Ronald "Bato" dela Rosa had barricaded himself in the chamber seeking protective custody to avoid arrest and transfer to the International Criminal Court over his alleged role in former President Rodrigo Duterte's war on drugs. Against that backdrop of tension and gunfire, the convening of the impeachment court felt like a return to institutional order. "The stark contrast between the smell of gunpowder last week and the breath of fresh air in the Senate yesterday was evident," Lacson wrote. The trial would proceed in public, with the chamber's doors open at all times. The rules required a two-thirds majority vote on each article of impeachment separately for conviction. The machinery was in place. The question now was whether Duterte would engage with it.

It's very hard to conceive how you will consider the defense of the respondent VP if not a single evidence is presented.
— Gerville Luistro, lead prosecutor
This is her chance. It is time for her to face and answer the accusations against her.
— Leila de Lima, Mamamayang Liberal representative
The Hearth Conversation Another angle on the story
Inventor

If she doesn't show up, does the trial just collapse?

Model

No. The rules are designed to prevent that. A default plea of not guilty is entered, and the trial continues. The Senate can hear evidence and reach a verdict whether she's there or not.

Inventor

Then what's the disadvantage of staying away?

Model

Everything. If she doesn't present a defense, the prosecution's evidence sits there unrebutted. The senator-judges have nothing to weigh against it. It becomes very hard to vote for acquittal when the other side has made its case and the defendant has said nothing.

Inventor

So it's a trap—she has to show up or lose by default?

Model

Not quite a trap. It's more that the rules protect the process, not the defendant's comfort. She can stay silent, but silence in an impeachment trial is its own kind of testimony.

Inventor

What if she resigns before the verdict?

Model

The trial continues anyway. Resignation ends her time as Vice President, but it doesn't end the trial. The second penalty—permanent disqualification from office—still matters. The Senate needs to determine whether to impose that.

Inventor

So this trial could follow her for the rest of her political life?

Model

Exactly. A conviction means she can never hold elected office again. That's why prosecutors say the trial must reach completion, regardless of what she does with her current position.

Inventor

What's the standard for conviction?

Model

Two-thirds of the Senate must vote to sustain the impeachment on each article separately. It's a high bar, but not an impossible one.

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