Who will Lou Dobbs blame for sharp ratings drop?

From Politico's Michael Calderone (emphasis added):

While it's already been noted that CNN's prime-time audience has dropped sharply in recent months, less viewers are tuning in at 7 p.m., too. Compared with May 2008, The Observer reports that Lou Dobbs has dropped 29 percent in total viewers and 27 percent in the key 25-54 demo.

I wonder if there is a helpless scapegoat that Dobbs can blame for this. Hmmm, I just can't put my finger on it.

Previously:

REPORT: Conservative media consistently scapegoat undocumented immigrants, ACORN