In this case, all one had to do was read beyond the headline to clearly see it was parody.
Column title:
Conservative Christian Columnist Doug Giles Endorses Barack Obama
First two paragraphs:
. . . And in other news, Joan Rivers is slated to grace the cover of Playboy’s “All Natural Edition,” John Edwards is a lovely family man who has zero narcissistic bents, and the temperature in hell has just dropped below freezing.
Don’t worry, conservative Christian: I haven’t T. D. Jaked into the Obama corner. I’m just jacking with ya.
Hopefully, this link will work better than my first:
I read the article and I agree with you, but the fact is many people do not read beyond the headline. Apparently Rush didn't. There are a lot of profoundly stupid people out there. Sarcasm is beyond their comprehension.