The PEJ study didn't attempt to identify bias on cable news. But it says this is evident: "Fox journalists were more opinionated on the air." The study says nearly seven out of ten stories (68%) included personal opinions from FNC's reporters -- "the highest of any outlet studied by far." 4% of CNN's segments included journalistic opinion. 27% did on MSNBC.

On stories about the war in Iraq, 73% of FNC stories included "personal judgments," compared to 2% on CNN and 29% on MSNBC. And the same is true for presidential election coverage: 82% of FNC stories included opinions, compared to 7% on CNN and 27% on MSNBC. Here are the details...