Sarah Palin buttons are seen for sale outside a Barnes & Noble book store where Palin was autographing books during a book tour stop in Roanoke, Va., Sunday, Nov. 22, 2009. (AP Photo/Don Petersen)
- Sarah Palin buttons are seen for sale outside a Barnes & Noble book store where Palin was autographing books during a book tour stop in Roanoke, Va., Sunday, Nov. 22, 2009. (AP Photo/Don Petersen)
- Barbara Epperly of Radford, Va, celebrates after Sarah Palin signed her books at a book tour stop at Barnes & Noble Book Store in Roanoke, Va., Sunday, Nov. 22, 2009. (AP Photo/Don Petersen)
- Sarah Palin talks to a young fan while at a book tour stop in Roanoke, Va., Sunday, Oct. 22, 2009. (AP Photo/Don Petersen)
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