Polls currently rank Sarah Palin as the frontrunner for the 2012 Republican nomination for President. The former governor of Alaska and running mate of John McCain returned to national politics earlier this month with a barnstorming speech to the first national Tea Party Convention in Nashville. Her bestselling memoirs have been a huge hit and Fox News has signed her up as an analyst. But is she a credible candidate? Political commentator Janet Daley and Professor Philip Davies of the Eccles Centre for American Studies at the British Library join Jane to discuss her appeal, her position and her potential.