David A. Farenthold writes at
The Washington Post that
Chris Christie's opponents are increasingly trying to ignite his temper:
Since his first year in office, in 2010, Christie has engaged in at least 14 raised-voice confrontations with regular people, often at town halls. These moments, played and replayed on YouTube, have become a defining characteristic of the governor — as proof that he’s either a tough, no-nonsense leader or a swaggering bully.
Now, as Christie considers whether to run for president, he is increasingly facing questions about whether his hard-nosed act will play among voters who may not be quite so hard-nosed as those in New Jersey. Christie will also have to contend with those, like [Sandy] Booket, who just want to goad him into a candidacy-killing moment.
Sun Tzu nailed it:
Hold out baits to entice the enemy. Feign disorder, and crush him.
...
If your opponent is of choleric temper, seek to irritate him. Pretend to be weak, that he may grow arrogant.