So far, there have been repeated attacks on Palin's inexperience, etc. But Palin cannot change the fact that less than 2 years ago she was the part-time mayor of a town of about 6500 people and has zero foreign policy experience.
But John McCain has based his campaign on the idea that Barack Obama is too inexperienced to be President. This pick shows that McCain's campaign theme is as empty as McCain's promise to run a "respectful" campaign.
Thus, I think the main thrust of the criticism shouldn't even be about Palin, it should be focused on McCain. Something like, "For months, John McCain has been claiming that he doesn't think Sen. Obama is experienced enough to be in the Oval Office. Now, if John McCain gets his way and succeeds George W. Bush, the nation will only have McCain's heartbeat keeping the Presidency from someone with zero foreign policy experience who less than two years ago was a part-time mayor. This pick demonstrates the fundamental emptiness of the McCain campaign, which is betting that the American people will ignore that John McCain says one thing and does another."