Recently some blogger ran a picture of Palin holding a "baby" whose head actually belongs to one of her big political supporters. Because the original photo consisted of Palin and her son Trig, Palin threw a gigantic hissy, insisting that kids are off-limits.
Palin has been shamelessly exploiting her kids ever since she got the nomination last summer. She exploited Trig for political purposes, and repeatedly exposed her daughter Bristol to public ridicule without even bothering to defend her daughter from attacks by Palin's own allies, the religious right.
So...sorry, but you can't have it both ways. Either kids are part of the process, or not. Make up your mind.