He has, repeatedly.
Not as forcefully as he could have; he seems intent on fence-sitting. Today he told a caller that he doesn’t believe Romney is pro-abortion, and any claims to that effect are news to him. My jaw dropped. The caller said Romney would never hold his own against Obama in a debate because he gets flustered and sweaty; Rush replied he has never seen that happen.
Sorry, Rush is dropping the ball big-time.