City of Man

I didn't know about this new book until Mark Noll wrote it up in Books & Culture, but it looks promising -- City of Man by Michael Gerson and Peter Wehner.  According to Noll:

[T]he authors write realistically about what politics can and cannot accomplish and about why they think so many passionate evangelicals have made so many political mistakes in recent years. They end by suggesting that "politics is the realm of necessity" and "the realm of hope and possibility," but also potentially "the realm of nobility." The arguments leading to these conclusions are by no means the last word, but unlike so much of current punditry, the authors' gentle realism has opened the door to fruitful reflection and faithful action instead of slamming it shut.