Many observers were mystified when Donald Trump attacked New Mexico Republican Gov. Susana Martinez. But the story was really very simple: Martinez hit Trump, so Trump hit back. Especially now that Trump is the GOP’s presumptive nominee, he attempted to make an example of a Republican who won’t get with the program. It might work, or it might not, but from Trump’s perspective it’s the tactic he used to beat 15 rivals for the GOP nomination.

The Trump-Martinez bewilderment focused on four factors: Martinez is Hispanic, she’s a woman, she’s a Republican (head of the Republican Governors Association), and she’s popular. “I think it sent all the wrong signals,” said Newt Gingrich, who has generally been pro-Trump. “You particularly don’t want to see your candidate who needs to…get stronger with Latinos, and stronger with women, attack a Latina woman Republican governor.”