by ISAGANI DE CASTRO, JR. abs-cbnNEWS.com/Newsbreak Polling firm Pulse Asia has denied Malacañang's allegation of political bias when it released a survey last week on public skepticism of President Arroyo's State of the Nation Address (SONA) four days before she made her speech before the joint session of Congress. In an interview with abs-cbnNEWS.com/Newsbreak, Ana Maria Tabunda, executive director of Pulse Asia, said it has been conducting and releasing surveys on public's perception on the truthfulness of President's SONA since 2005. She wondered why it was only now that Malacañang criticized the group for being allegedly partisan in its SONA survey. "We've been doing this since 2005," she said. "Why is it they did not react this way before?" Tabunda said respondents had the choice whether to say they found Arroyo's SONA truthful, not truthful, or if they were undecided. "If people find it truthful, we also print that. So where is th...