GMA Network's News and Public Affairs programs got the highest credibility rating nationwide according to Pulse Asia's 2008 Ulat ng Bayan survey.

Based on the study, 73% of TV viewers nationwide regard GMA News and Public Affairs (N&PA) programs as credible. GMA-7 was ahead of ABS-CBN's News and Current Affairs with a credibility rating of 72%.

GMA News and Public Affairs' credibility was more pronounced in the National Capital Region with a rating of 84% against ABS-CBN's 65%.

GMA Network likewise posted notably higher credibility ratings across the upper and middle classes (ABC). Among the AB and C classes, GMA Network had a high credibility rating of 85% versus ABS-CBN's 68%.  GMA was also ahead in the lower class D with a credibility rating of 75% against ABS-CBN's 74%.

GMA Network's credibility is evidenced by the high TV rating of its news programs. In March, primetime newscast 24 Oras posted an average audience share of 44.4% in viewer-rich Mega Manila, higher by 7 percentage points than TV Patrol World's 37.4%.

In Urban Luzon, 24 Oras led competition with an average audience share of 41.8% in March versus TV Patrol World's 40.2%.

GMA Network likewise had bigger audience shares in viewer-rich Mega Manila and Urban Luzon during special news coverage for 2008 and early 2009 including the ZTE scandal, Rudy Fernandez funeral, the State of the Nation address of President Gloria Macapagal-Arroyo, and Barack Obama's inauguration, among others.