The two loyalest listeners I knew of SavageNation were both lefties. I don't know any conservative that listen to him.
Personally, I don't watch the news much. It's too polarized, bad news/disaster oriented when not on politics.
Don't care for CNN, and don't watch it at all. I likely watch Fox more than MSNBC. During the election, I watched more MSNBC.
During Bush, I liked Olbermann. I think he's funny. But, I never delude myself into believing what he said was "news" or the "truth". He's more a comic columnist with an agenda. But, often, it's my agenda, too.
FWIW, it seems to me that indignant anger and fear mongering attracts conservatives [Rush/O'Reilly/Dobbs/Savage] and satire and humor draws the lefties [Olbermann/Stewart].