The report, which is part of Pew's annual comprehensive State of the News Media, found that opinion and commentary fill 85 percent of the airtime on MSNBC. The network only devotes 15 percent to "factual reporting," according to the Pew study.
To conduct the study, Pew looked at a half-hour of daytime programming for the first five months of 2012, along with the first five minutes of the "general news-focused programs" in primetime. To ensure that the programming was representative, Pew also studied a full three days of network programming later in 2012.
By comparison, Fox News' programming featured 55 percent commentary and opinion and 45 percent "factual reporting." CNN was the only network to feature more reporting than commentary, by a 54-46 margin.
Pew considered a story was commentary or opinion if 25 percent of the time in that story included opinionated statements.
Here's a breakdown by network:
For MSNBC, a big shift in programming between Pew's 2007 study and its 2012 report came with the increased frequency of edited packages in the network's primetime coverage. These packages are not usually reported content, according to Pew. For example, host Rachel Maddow often leads off her show with a package filled with her opinions on a subject.
Overall, the Pew study found that the three cable networks devoted more airtime to commentary and opinion during daytime hours (63 percent) than straight news reporting (37 percent).