Arianna says it best

http://www.huffingtonpost.com/arianna-huffington/sarah-palin-a-trojan-moos_b_124867...

snip
The point is that Palin, and the circus she's brought to town, are
simply a bountiful collection of small lies deliberately designed to
distract the country from one big truth: the havoc that George Bush
and the Republican Party have wrought, and that John McCain is
committed to continuing.

Every second of this campaign not spent talking about the Republican
Party's record, and John McCain's role in that record, is a victory
for John McCain.

Her critics like to say that Palin hasn't accomplished anything. I
disagree: in the space of ten days she's succeeded in distracting the
entire country from the horrific Bush record -- and McCain's
complicity in it. My friends, that's accomplishment we can believe in.