The Philippine House of Representatives is poised to vote on impeaching Vice President Sara Duterte the second such attempt in as many years in a move that has thrown the Southeast Asian nation into deeper political turmoil at a time of acute economic uncertainty. The impeachment complaint, which was scheduled for a vote on Monday, targets the former 2028 presidential frontrunner on charges including constitutional violations, breach of public trust, misuse of confidential government funds, failure to disclose assets, bribery, and private death threats issued against President Ferdinand Marcos Jr. and his wife. If the House approves the articles of impeachment a threshold it appears set to clear the case will proceed to the Senate for trial, where a two-thirds majority conviction would remove Duterte from office and permanently bar her from holding any public position.
The political stakes are unusually high. Senator Alan Cayetano, a longtime ally of the Duterte family and former foreign secretary under Sara’s father, Rodrigo Duterte, was elected Senate President late last week a development widely interpreted as a strategic counterweight to the impeachment push. The elevation of Cayetano, who served as campaign manager for Sara’s 2022 vice-presidential run, means the Senate’s presiding officer may be sympathetic to the vice president’s defence. A two-thirds conviction threshold in a 24-member chamber becomes a fundamentally different challenge when the chamber’s leader is aligned with the accused.
“The scale of these transactions cannot be reasonably explained by lawful income, declared assets, or the businesses and professional activities attributed to the couple,” said Representative Terry Ridon, one of the principal complainants, in a statement posted on social media platform X. “Today’s vote is therefore not merely a political exercise. It is a constitutional act of accountability.” The impeachment complaint alleges that more than $110 million in private bank transactions were flagged by the country’s anti-money laundering agency as being inconsistent with Duterte’s officially declared income and business activities.
What makes this impeachment structurally different from its predecessor is the precise arithmetic at play. When the first impeachment motion was voted on in 2025, it received 215 votes from the 313-member House well above the one-third threshold required to transmit the case to the Senate. That motion was later voided by the Philippine Supreme Court on technical grounds, clearing the way for the current attempt. Lawmakers from Mindanao, Duterte’s political stronghold, told Al Jazeera last week that the final count this time is expected to be close to the previous tally, and that the intent to vote in favour remains unchanged. The Committee on Justice already voted 53-0 to find probable cause a unanimous verdict that signals strong institutional backing for the charges.
The parliamentary path to impeachment is significant, but the constitutional arithmetic in the Senate is where the process may ultimately falter. With Cayetano presiding a man whose political career is intimately tied to the Duterte family’s fortunes securing a two-thirds conviction of the 24 senators becomes a formidable challenge. Legal analysts in Manila have noted that the Senate’s new leadership structure may effectively neutralise the impeachment machinery, creating an environment where the charges against Duterte survive the House vote but die in the trial phase. This scenario would leave the vice president politically wounded but constitutionally intact, free to mount a 2028 presidential campaign that her allies believe remains viable despite the proceedings.
The impeachment itself is the culmination of a political rupture that has been building since the 2022 elections, when Marcos and Duterte ran as a unified ticket a partnership that has since unravelled into open hostility. The deterioration accelerated after the International Criminal Court ordered the arrest of Rodrigo Duterte on war crimes charges related to the administration’s anti-drug campaign. Sara Duterte’s public endorsement of that campaign, and her ongoing status as a potential ICC target, have compounded the legal and political exposure of the family name. Her father’s arrest, and her own impeachment, have reframed the 2028 presidential race in ways that were unimaginable when she entered politics as the heir to one of the Philippines’ most durable political dynasties.
The broader context matters enormously here. The Philippines is navigating a severe economic moment one shaped by the global energy crisis triggered by the ongoing US-Israel war on Iran, a geopolitical shock that has driven up oil prices across Asia and squeezed the purchasing power of Filipino households. A political crisis layered on top of an economic squeeze creates compound risk for the Marcos administration, which has staked its legitimacy on economic management and infrastructure investment. Whether the impeachment process strengthens or destabilises that mandate will depend on how quickly the Senate trial proceeds, and whether new evidence particularly around the flagged financial transactions surfaces to reshape the political calculus before any verdict is reached.
The international dimensions of this story are also significant. The Philippines is a treaty ally of the United States, and its internal political stability has direct bearing on the regional security architecture that Washington has cultivated across the South China Sea. Sara Duterte’s foreign policy orientation more transactional and less explicitly pro-American than Marcos’s current posture is a factor that regional analysts have been watching closely. The impeachment, if it proceeds to a Senate trial, will draw scrutiny from diplomatic circles in Beijing, Washington, and Tokyo, all of which have deepened their engagement with Manila under the Marcos administration.
As the House vote approaches, both sides are preparing for what comes after. The Duterte camp has signalled it will contest every procedural step and frame the proceedings as politically motivated, a narrative that has resonance in Mindanao where the family retains deep grassroots support. The House majority, meanwhile, has emphasised the constitutional weight of the charges and the gravity of the financial irregularities. Whether the Senate can be a neutral arbiter, or whether it has already been shaped by Cayetano’s elevation, will be the central question as this political drama unfolds through the coming weeks.
