I think article linked below on reading level is important to note in regards to this.
https://contently.com/strategist/2015/01/28/this-surprising-reading-level-analysis-will-change-the-way-you-write/ By keeping his language simple, he is able to reach, and have his keywords understood by a larger American audience. Of course understanding speech and reading are slightly different, but it's word choice still becomes important.

As this video notes. Trump is a salesman. And he's selling his crap expertly well. He circumvents the answer with babble that never actually answers the question. He never answered if it's un-American to have a religious litmus test to allow people to visit the US, he just says we have a problem, and implicates all the people of one faith in that, which ISIL itself said sometime ago was their goal, to turn the world against all of Islam to make it easier to recruit and radicalize more people... which is off topic. He doesn't address the point of the question, he sort of skirts it and generalizes it into his overall framework. One could argue that yes, saying there's a problem is itself an answer to the question, but it isn't a direct answer.

I don't know as if he's intentionally talking at that low a level though, or if he's just his style period.

It'd also be interesting to see if Hitler's run-up to being elected, if he used similar style. That is if he used a simple style to appeal to the masses. Not just Hitler, but other leaders of his ilk. I choose Hitler here as more an example of an elected leader gone wrong, that had mass appeal to his people, but later regretted to the point of shame.

Even if Britt's famed Warning Signs of Fascism isn't fully accurate by all scholars (and I'm aware he doesn't actually have academic scholarship) many do come close. I think most can agree that it requires at least Extreme Nationalism, warmongering, a loss of civil liberties and rights (Patriot Act, wanting to increase the spy power of the NSA, etc), corporatism a merger of the state and corporate power, racism (Britt's warning signs says sexism, but I think racism is more apt and I don't think what people normally think about sexism applies, though we need more of a racism slash something, to note those who "sin" differently than others, such as the gays).

*promote

Promoting this video and sending it back into the queue for one more try; last queued Thursday, December 31st, 2015 11:46pm PST - promote requested by enoch.