It's Rush's continuing "Low Information Voter" shtick. It's funny for 20 minutes or so, but... it gets really old and annoying beyond that IMO. Today he spent nearly the entire show on that nonsense, when there were plenty of new Obama and democRAT outrages to discuss.
Makes me wonder if today was indeed a "no prep" day for Rush and he was just mailing it in.
Really annoying... I had a rare opportunity to listen to all 3 hours of Rush today, and his show was utter crap. What a waste...