Last night, CNN's Campbell Brown had this to say about the attacks on Sarah Palin:

"I find it so stunning that the very people who introduced us to Sarah Palin, who told us she would make a great Vice President, have now turned on her with a vengeance..."
Yes, that does sound "stunning."  So stunning, in fact, that it is unbelievable.

... How do I know the attacks on Palin are a calculated preemptive strike from supporters of a potential 2012 Palin foe -- not from a McCain loyalist?  Aside from my personal knowledge that some of this stuff (not necessarily the Newsweek leaks, but other mockery) is coming from supporters of a potential competitor -- it also makes perfect sense.

Even if the attacks on Palin were true (they are not), no McCain loyalist would ever leak this stuff -- because an attack on Palin is also an indictment on McCain's judgment. 

The attacks are coming from disgruntled McCain staffers, to be sure, but these folks have other loyalties ...