Trump has good/great crossover appeal because he has a simple, if outrageous, plan on immigration that a working man can understand.

He says, " I will stop..."
Can't get clearer than that.
It translates to pocket book issues for the working people in the middle. They know their earnings, and standards of living, are diminished by unfettered immigration.

It is very likely the single most uniting element of current presidential politics. Your party doesn't matter if you feel undermined by illegal immigration. Real or imagined.

Dealing with urbanization and the second amendment is a far more difficult task than getting elected on pocketbook issues.

Out there doing it best I can.