It’s been three years since former Alaska Gov. Sarah Palin made her splash onto the national stage as Sen. John McCain’s running mate in the 2008 presidential election. And since then she has acquired a very loyal following. But is that helping or hurting her? On Tuesday’s “The O’Reilly Factor,” conservative columnist and author of “Demonic: How the Liberal Mob Is Endangering America,” Ann Coulter expressed her concern over the Palin phenomenon. She was asked by substitute host Laura Ingraham if Palin can maintain her status as a tea party favorite by stringing people along about her potential 2012 candidacy....