President Ferdinand Marcos Jr. and Vice President Sara Duterte's approval ratings plummeted in September amid West Philippine Sea developments, rising commodity prices, and concerns about proposed confidential funds.

Latest survey from opinion polling firm Pulse Asia on Monday showed that Marcos' approval rating fell 15 basis points from 80 percent in June to 65 percent in September.

Meanwhile, Duterte's approval rating fell 11 basis points from 84 percent in June to 73 percent in September.

Still, the Vice President, daughter of former President Rodrigo Duterte, outperformed Marcos.

"Although the President and the Vice-President continue to enjoy majority approval scores at the national level and across geographic areas and socio-economic classes, both experience significant erosions in their respective approval ratings during the period June 2023 to September 2023," the pollster said.

Marcos and Duterte still enjoy majority trust ratings at 71 percent and 75 percent trust scores, respectively.

Meanwhile, half of adult Filipinos had an upbeat assessment of the work done by Senate President Juan Miguel Zubiri.

Half of the respondents could not say if they approved or disapproved of the performance of Supreme Court Chief Justice Alexander Gesmundo.

Pulse Asia conducted the survey using face-to-face interviews from 10 to 14 September 2023.

This nationwide survey is based on a sample of 1,200 representative adults 18 years old and above.

It has a ± 2.8 percent error margin at the 95 percent confidence level.