BETHLEHEM, Pa. (AP) — Sarah Palin has launched her book tour in eastern Pennsylvania. The former Alaska governor and 2008 Republican vice presidential nominee on has signed copies of her new book, "Good Tidings and Great Joy: Protecting the Heart of Christmas" at a Barnes & Noble store outside Bethlehem on Tuesday night The book went on sale Tuesday. Palin chose to start her book tour near a city with obvious connections to the holiday.