New Jersey GOP Gov. Chris Christie has forged a reputation as an imposing lawmaker who can get the job done by sheer will and force. But his confrontational style also poses a liability should he make a 2016 White House bid -- attracting hecklers, political rivals and others intent on disrupting his message to spotlight their own. Though Christie’s brash style has long been a topic for conversation, it has resurfaced amid political talk moving from the midterms to the next presidential election and Christie telling New Jersey resident Jim Keady to “sit down and shut up.” Keady, who challenged...