Jason Zengerle

Brock’s decision to abandon conservatism was a gradual one—and, unlike other famous apostates’, more personal than ideological. “I didn’t wake up one day and say, you know, ‘Supply-side economics doesn’t make sense,’ ” he says. In fact, his move from the right began after he failed to deliver the goods in a book about Hillary Clinton and some of his conservative friends expressed their displeasure with his efforts. Brock, in turn, began to suspect that these friends valued him only for his ability to destroy liberals—and possibly loathed him because he is gay.

Jeff Smith was a rising political star. Then the FBI started asking questions about his past. “That evening, Smith gave a speech at a fund-raiser in a downtown loft. He found it difficult to focus. ‘As I was talking, I had an ominous sense of foreboding about what was to come,’ he says. ‘I looked around the crowd and thought to myself, “This is going to be our last fund-raiser.”‘”

New Jersey Gov. Chris Christie is no longer just a popular governor; he has become a national Republican star. His focus on fiscal issues and his reluctance to wade into the culture wars—during his gubernatorial campaign, he declined Sarah Palin’s offer to stump for him—have endeared him to members of the GOP’s sane wing. “The breakthrough he’s scoring in New Jersey is hugely promising,” says David Frum, a conservative writer who fears that the Republican Party is being swallowed by the tea party.

After taming crime in Los Angeles, Bill Bratton has won over the skeptics who doubted his success in New York. But all he really wants is his old job back.