They want you to think that McCain didn't know about it or if he did, he would have picked Romney or Pawlenty instead. There's an working assumption that wthere's something "wrong" with Palin and her family and they're using this unborn child to pressure McCain to drop grandma Palin.
It's a sick strategy. But the journos and the news anchors are using it.
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Diversity is a Weakness, Not a Strength