Everyone I talk with wonders how Donald Trump is polling so high. Most just shrug and say it must be because people love a spoiler, love comedy, want to see the explosions and radioactive fallout.
I was sort of thinking that too, until I looked into it a bit.
The transcript of Trump's announcement that he's running is at http://time.com/3923128/donald-trump-announcement-speech/. It looks like he sent out a team of people to blue collar bars to ask people what they thought of the country, the world, and what needs fixing, and this speech is the result of that study. He addresses all the concerns of the Republican conservative base. He doesn't exactly cover the "hows", but he hit all the "whats" really hard. No other candidate is doing that, not to that degree.
This doesn't mean that he really understands the concerns. It just means his research team nailed it. But the folks in those bars are cheering.
Secondly, and this may be the most important factor,
Whoa, I just realized I should make sure no one thinks this is an endorsement! Nope. Just speculation on why he scores so high in polls.