Donald Trump keeps giving Republicans major cause for alarm — because he's still attacking them

Donald Trump
Donald Trump

(AP Photo/Chris Carlson)
Donald Trump.

He said he wouldn't say it.

But Donald Trump seemingly couldn't resist.

"I wonder if I could say — you know, remember lyin'. Lyin'. I won’t say ‘Lyin' Ted' — I refuse to say it," he told a crowd during a Friday rally in Fresno, California.

“Lyin’ Ted!" Trump then exclaimed. "Holds that Bible high, puts it down, and then he lies. Lyin’ Ted. Well, I’m going to retire that from Ted — I’m not going to call Ted that anymore."

Trump had resurrected perhaps his most infamous moniker to discuss shifting it from Ted Cruz, the Texas senator who challenged him for the Republican nomination, to Hillary Clinton.

But the incident helped illuminate a still-signature part of Trump's campaign rallies: his insults of fellow Republicans.

The Manhattan billionaire is nearly a full month into being the GOP's presumptive nominee, but his rallies over the past week have shown that he doesn't appear to be easing up on fellow Republicans who have drawn his ire.

During a Tuesday rally in New Mexico, for example, Trump unleashed on Susana Martinez, the state's governor. Martinez is the first Latina governor in US history. And she's a Republican.

But all that didn't stop Trump for attacking Martinez — one of a handful of GOP governors who have yet to come out in support of Trump — for not attending his rally.

"We have to get your governor to get going — she’s got to do a better job, OK?" Trump said. "Your governor has got to do a better job. ... She’s not doing the job. Hey, maybe I’ll run for governor of New Mexico — I’ll get this place going. She’s not doing the job. We got to get her moving. Come on. Let’s go, governor."

Susana Martinez
Susana Martinez

(AP Photo/Kathy Willens, File)
New Mexico Gov. Susana Martinez.

GOP strategist and commentator Evan Siegfried, who is anti-Trump, wrote on Business Insider the following day that the remark showed Republicans can't trust the real-estate magnate.

He wrote:

A few days ago, Trump’s campaign chairman, Paul Manafort, made it clear to Republicans that if they distanced themselves from Trump, they would not face any retribution. This was a smart move considering how toxic Trump is with every key demographic needed to win an election. Unfortunately, it seems that Donald Trump either did not get the memo or, even worse, he decided to ignore it. The message this sends to other Republicans should be chilling: Trump cannot be taken at his word.

Later in the week, Trump homed in on two of his favorite targets that have said they will not support him: Jeb Bush, the former Florida governor and failed 2016 presidential hopeful, and Mitt Romney, the 2012 GOP nominee.