“[Sanders’s] heart is in the right place,” Lucas said. “He understands the bottom line: Everyone in this economy has been affected. When corporations get in bed with government, we get fascism. That’s what we have on both sides of the aisle.”
That quote highlights what makes the GOP's dilemma so interesting. Blue-collar conservatives are beginning to realize that the upper-crust are backing the GOP for different reasons, ones that often run counter to their own interests.
Trump is benefiting from simplistic and xenophobic narratives that don't sit well with business interests, but work great with poor conservatives. That's why Trump can be anti-immigration, but has little reason to rail against social welfare. He's speaking to the state of poor conservatives, and the more he visibly makes the GOP nervous, the better his argument that the GOP plays to them. That's why Trump loves saying inflammatory and racist shit. It makes the GOP freak out, which makes him look more genuine in the eyes of poor conservatives. That, and he is sharing their language.
I expect that Trump will become far less controversial once he gets the nomination. That's when things will get really scary. I bet that Hillary will be disappointed to find herself running against a much saner-seeming Donald.