In The Audacity of Hope, President Obama called for a different brand of politics–a politics rooted in the faith, inclusiveness, and nobility of spirit at the heart of “our improbable experiment in democracy.” He explores those forces–from the fear of losing to the perpetual need to raise money to the power of the media–that can stifle even the best-intentioned politician. He also writes, with surprising intimacy and self-deprecating humor, about settling in as a se....