MANCHESTER, N.H. - As it played out on TV this week, Sarah Palin’s “One Nation” road trip of U.S. historical sites was a masterpiece of political mischief-making – a wild dash up the East Coast that delighted her fans and cornered the market on 2012 coverage for days on end. That’s not how the bus tour looked to Republicans on the ground, many of whom are more convinced than ever that the former Alaska governor is simply not serious about running for president. While Palin has reveled in giving an extended one-fingered salute to the national press, refusing to give...