Take a look at the article on how people learn. Psychologists have found that studying the same material in two different locations (e.g., inside, outside) increases retention of information compared with studying material twice in the same location.
Now, think about how people consume news. If they use more media to access the same information (e.g., about an election), do they know more than if they rely on one medium, even if the hallowed New York Times? If so, is it a matter of different, additional information being available in different media, OR is it merely because essentially the same information is “studied” twice in different media “locations”?
Food for research thought.