James Downie at The New Republic analyzes the “decline of Glenn Beck.”  In it, Downie notes Glenn Beck’s lost advertisers (emphasis added):

His ratings and reputation are in steep decline: His show has lost more than one million viewers over the course of the past year, falling from an average of 2.9 million in January 2010 to 1.8 million in January 2011. He now ranks fifth among Fox’s six weekday talk hosts, trailing lesser-known personalities like Shepard Smith and Bret Baier. Beck’s three-hour radio show has been dropped in several major cities, including New York and Philadelphia, and has seen a ratings decline in More >