...about those among Obama's camp followers, up to and including Andrew Sullivan, who were pushing "baby-gate," is that they really seemed to believe that it would reflect badly on Sarah Palin if the rumors that Trig was really her grandson were true!
As so often, Steve Sailer got this exactly right.
Bottom line: even if the rumor-mongers had been right, they would have ended up looking like a bunch of jerks. And if they'd been wrong, they would have ended up looking like an even bigger bunch of jerks. Therefore (assuming the law of the excluded middle) they could only have ended up looking like a bunch of jerks.