I simply can't understand how anyone can support Trump.
If you are genuinely interested to know, I would advise you to view some GOP debates that took place for this presidential election. You'll find that he actually is one of the few best contenders (if not the best) in the group.
Contrary to how people currently see or remember it, his stance is relatively moderate (albeit outspoken) compared to his Republican rivals. The exception to Trump's moderacy is his stance on immigration, with the extention of the wall along the entire U.S.-Mexico border and his proposed ban on Muslims being the most notable examples. One could argue that these extremities are overexposed. On the other hand, there is room for decorum. [EDIT 16-08] And fact-checking.