Sarah Palin on Tour....

Sarah Palin will embark on her book tour next week, promoting her much-anticipated memoir "Going Rogue: An American Life." The 2008 Republican vice presidential nominee is scheduled to appear on "The Oprah Winfrey Show" Monday, the day before her book's official release. True to her small town roots in Alaska, Palin will begin her book tour with stops in smaller cities in states like Michigan, Indiana, Ohio, North Carolina and Alabama. Some people wonder if Palin's book tour might be a way of gauging voters' interest in having her make a Republican presidential run in 2012. The former Alaska governor received an advance estimated at one-point-25-million dollars for her "Going Rogue" memoir.