Not sure I agree.  Conservative talk radio has long been gaining momentum even when the situation was reversed (ie Republican House, Senate and White House).  Air America was never able to find a viable audience.<p>I suspect it's more because conservative views have long been an underserviced market (whereas much of the mainstream media tilts left - and quite openly so as per pew poll performed annually if I recall: <a href="http://www.npr.org/templates/story/story.php?storyId=1919999" rel="nofollow">http://www.npr.org/templates/story/story.php?storyId=1919999</a>).