ATLANTIC, Iowa — There are only a few things voters here say they know about Rick Perry. They know he’s been governor for a while. They know Texas is a big state with a lot of jobs. They know Perry has a reputation for being brash and talking frankly. And, after casting about for just the right Republican to take on President Obama, they know, for now, that he may be the one. “I can’t quite explain it,” said Steve Bennett, 59, who sized up Perry the other night over a plate of roasted turkey and green beans. “He’s thick-skinned,...