"Nobody was vetted less or more than anyone in the final stages, and John had access to all that information and made the decision," Davis said. "It's really not much more complicated than that."
Today, in the New York Times, we learn this:
Aides to Mr. McCain said they had a team on the ground in Alaska now to look more thoroughly into Ms. Palin’s background. A Republican with ties to the campaign said the team assigned to vet Ms. Palin in Alaska had not arrived there until Thursday, a day before Mr. McCain stunned the political world with his vice-presidential choice. The campaign was still calling Republican operatives as late as Sunday night asking them to go to Alaska to deal with the unexpected candidacy of Ms. Palin.
People familiar with the process said Ms. Palin had responded to a standard form with more than 70 questions. Although The Washington Post quoted advisers to Mr. McCain on Sunday as saying Ms. Palin had been subjected to an F.B.I. background check, an F.B.I. official said Monday the bureau did not vet potential candidates and had not known of her selection until it was made public.
Oh, and this:
In Alaska, several state leaders and local officials said they knew of no efforts by the McCain campaign to find out more information about Ms. Palin before the announcement of her selection, Although campaigns are typically discreet when they make inquiries into potential running mates, officials in Alaska said Monday they thought it was peculiar that no one in the state had the slightest hint that Ms. Palin might be under consideration.