Originally Posted by
Elephant
One Trump theory is that he's the apotheosis of the racism inherent in the Republican message, from Nixon's southern strategy to Reagan's young bucks and welfare queens to all the current attacks on anything that helps "those people". He says out loud what others only suggested. He also speaks in favor of Social Security and Medicare, which are incredibly popular with the vast majority of the population, but not most Republican politicians or their patrons.
Another theory is that people are very angry and he feeds that anger. We may not agree with him or like him, but he'll shake things up. He's not like all those other politicians. Think primal scream.
It doesn't really matter that most of his policy proposals make no sense. Alas, most of his policies are not that far off from Cruz's or Rubio's. See tax policy, for example - a bit for the middle class, a whole lot for the top of the income scale and would explode the deficit even if you were to eliminate virtually the entire federal government.