Manila: An OCTA Research survey released on Friday showed that 71 percent of adult Filipinos believe that law and evidence, not politics, should guide the Senate's impeachment vote against Vice President Sara Duterte.

According to Philippines News Agency, the survey, conducted from July 4 to 11, 2026, asked 1,200 respondents the question: "What should matter most when Senators vote on Vice President Sara Duterte's impeachment? The law and evidence, or political considerations?" The findings revealed that 71 percent answered "law and evidence" while 21 percent chose "political considerations." At least 7 percent answered they "don't know."

The OCTA noted that the findings suggest Filipinos are expressing broader expectations about democratic governance. The results indicate that the public values institutional fairness, due process, and evidence-based decision-making, regardless of the eventual verdict. It added that among the study's most important findings was that respondents were not asked whether Vice President Sara Duterte should be convicted or acquitted. Instead, they were asked what should matter most when senators cast their votes.

According to OCTA, the findings showed that public confidence in democratic institutions is likely to be strengthened when decisions are perceived to be grounded in constitutional standards, evidence, and fairness rather than political expediency or partisan considerations. Respondents who answered "law and evidence" were from the National Capital Region (77 percent); Balance Luzon (76 percent), Visayas (63 percent), and Mindanao (62 percent).

Those who answered "political considerations" were from Western Visayas (43 percent), BARMM (36 percent), and Eastern Visayas and Zamboanga Peninsula (35 percent). The survey has a ±3 percent margin of error at a 95 percent confidence level. Subnational estimates for the geographic areas covered in the survey have margins of error of ±6 percent for NCR, Balance Luzon, Visayas, and Mindanao, also at a 95 percent confidence level.