"Immediately after the Republican convention 41% of Coloradoans said John McCain's choice of Palin to join him on the ticket made them more likely to vote for him while 38% said it made them less likely to do so. Now the number of people saying Palin's selection makes them less likely to vote for McCain has climbed to 47% with the number of people viewing it favorably dropping to 38%."
On the other hand, Palin is exciting the base, and maybe that was, in fact, the whole of her job.