Nothing makes me angrier than a TV or newspaper reporter making a comparison to Limbaugh with liberal leaning reporters such as Rachel Maddow or Kieth Olbermann. After over two decades of unchallenged, unreported, and non-stop propaganda coming from Conservative radio talk shows, the media has a Gall to finally come out of the woodwork to challenge people for whom are doing the very work that they should have been doing for over two decades!
Limbaugh, almost from the start of his radio career in 1984, has preached about "Liberal Media Bias" which is a fantasy of his that he was able to relay almost unchallenged. In 1988, his radio show went national, and so did his preaching.
This, among other insidious messages Rush Limbaugh spouted throughout the national airwaves took a toll on the liberal community. In 2003, a Pew Poll showed a majority of Democrats believed their was a "Liberal bias" in the mainstream media. Ironically, this was the same year that a large majority of Americans thought that Saddam Hussein perpetrated the 911 attacks.