Well, first let me just say that the novel is by no means meant to build a case against Sarah Palin. However, to the extent that the people around [the fictional vice president] Tara watched in this troubled state of confusion, despair and helplessness as she flailed around — that was something I experienced. Palin vacillated between extraordinary highs on the campaign stage — she ignited more enthusiasm than our side had seen at any other point — to debilitating lows. She was often withdrawn, uncommunicative and incapable of performing even the most basic tasks required of her job as...