MANILA, Philippines — Public opinion remains highly fractured as the Senate of the Philippines formally convenes as an impeachment court for the trial of Vice President Sara Duterte, with 38 percent of Filipinos remaining completely undecided on the proceedings.
The latest nationwide survey conducted by market research firm Tangere from July 7 to 10, 2026, reveals that the public is split nearly down the middle regarding their alignment. While 32 percent of respondents indicate they favor the prosecution, a close 30 percent actively back Vice President Duterte. This marginal two-point difference highlights a highly polarized political climate, leaving a plurality of the population uncommitted as initial evidence and witness testimonies begin to surface in the Senate chamber.
“The data indicates that the vast majority of the public is adopting a wait-and-see approach, refusing to commit to either side during these early, critical stages of the trial,” said Martin Peñaflor, Chief Executive Officer of Tangere. “For corporate decision-makers, brand managers, and media organizations, this high percentage of undecided citizens highlights the critical importance of objective reporting and risk-averse public relations planning during high-stakes political events.”
Key Takeaways: Evaluating Trial Dynamics and Institutional Leadership
Public Split Between Prosecution and Defense
With only 32 percent favoring the prosecution and 30 percent backing the Vice President, neither side has secured a definitive lead in the court of public opinion.
- A Plurality of Observers Wait on Evidence: The 38 percent undecided figure indicates that a large segment of the population is waiting to evaluate the concrete evidence and testimonies before forming a final judgment.
- Highly Polarized Base Support: The narrow margin between the two active sides reveals a highly polarized national landscape, where political allegiances remain deeply entrenched.
- Business Takeaway: In a deeply divided market, consumer-facing brands must maintain absolute political neutrality in all external and internal communications. Publicly aligning with either side of the impeachment debate presents substantial reputational risks that could alienate up to a third of a brand’s customer base.
Assessing Witness Credibility: The Testimonies Begin
The survey specifically gauged public perception of the trial’s early proceedings, which saw National Bureau of Investigation (NBI) Senior Agent John Mark Calilung take the stand as the prosecution’s first major witness. Calilung served as the lead agent investigating alleged threats made by the Vice President.
- Spotlight on Expert Witnesses: Public perception of the trial’s legitimacy hinges heavily on the perceived credibility of professional, non-partisan figures like NBI agents.
- Scrutiny on Opening Arguments: Respondents’ leanings are actively shaped by how effectively each side presented their opening statements and initial cross-examinations during the opening days of the trial.
- Business Takeaway: Just as the public scrutinizes the credibility of legal witnesses, corporate stakeholders closely examine the data and authorities backing corporate claims. B2B organizations must ensure their marketing and communications are anchored in verifiable, objective research rather than speculative narratives.
Public Satisfaction with Senate Leadership
The survey also evaluated public satisfaction with the key figures presiding over the historic trial, specifically Senate President Sherwin “Win” Gatchalian and the designated presiding officer, Senator Francis “Chiz” Escudero.
- Demand for Impartiality: Senate President Gatchalian has publicly emphasized the necessity of maintaining strict rules of impartiality and order inside the chamber, a stance that strongly resonates with a public looking for a fair trial.
- Focus on Procedural Integrity: The performance ratings of the presiding officers serve as a direct indicator of public trust in the Senate’s capacity to act as a fair, objective tribunal.
- Business Takeaway: Operational transparency and structural fairness build institutional trust. Businesses can protect their corporate reputations by mirroring this dedication to procedural integrity in their corporate governance and stakeholder relations.
Survey Methodology
To ensure scientific credibility and representative accuracy, Tangere utilized its proprietary mobile-based polling platform to collect real-time public opinion:
- Sample Size: 1,200 Filipino respondents nationwide.
- Field Work Dates: July 7 to 10, 2026.
- Margin of Error: ±2.77 percentage points at a 95 percent confidence level.
- Demographic Profile: Representative distribution covering key geographic regions, socioeconomic brackets, and age demographics across the Philippines.
Make Data-Driven Decisions with Tangere
In times of national uncertainty and shifting public sentiment, guesswork is a liability. Whether you are managing corporate communications, analyzing policy impacts, or looking to understand consumer behavior across key demographics, Tangere provides the rapid, reliable market research services you need to move forward with confidence.
Contact Tangere today to design your own public polling campaign or to leverage our advanced mobile-based research solutions.
