You keep missing the point. Gingrich is running as a "family values" candidate and is very judgmental about other people's relationships, including gays. That makes his infidelity and desire to have an open marriage relevant to his campaign for the Republican nomination.
Obama is not running on an anti-drug platform, and is not in a primary contest.
Meanwhile, Obama is scheduled to be on nearly every morning talk show tomorrow, so it's unlikely that there's any "bias."
OK, I'll admit I stopped watching the debates after Cain was assassinated by the media, but I don't recall seeing anything about Gingrich making "family values" any kind of centerpiece of his campaign.
The justification for this whole Gingrich assassination attempt by the media is that "personal conduct matters" so once again, why has the media not examined Mr. Obama's "personal conduct" with regards to his cocaine use, and WILL the media investigate this in the upcoming campaign?
As for Mr. Obama appearing on morning shows on Sunday, good - let's see if any of his supporters, er, the news media hosts/reporters, question him about his cocaine use.