I think this is an interesting situation for discussion.
Leaving aside emotion here for a minute, and the particular issue of Palin personally, how is she being judgmental? I mean in a pejorative sense? The first definition of the word judgmental is “of, relating to, or involving judgment”.
What I see, right or wrong (and I believe mostly right), is a person who has a principled, defensible position, and is maintaining consistency - in much the same way Sarah Palin did when she had Trig.
Now, if the husband is going to quit his job during their term in office to care for the young children that changes things entirely, but otherwise I am not sure I disagree completely with Dr. Laura.
And about the notion that Dr. Laura can never speak of virtue because of what she did twenty (Maybe 30) years ago. I'll say it again. I stole a shirt when I was 17 years old. Does that mean I'm never allowed to state that shoplifting is wrong?