His supporters appear to be all over the map. 

 I think we are talking about the four blind men describing the elephant.  The one grabbing the trunk thinks it's like a snake, the one grabbing the tail says it's like a rope, the one on the side says it's like a wall, the one grabbing the leg says its like a tree.  Each perceives something different.  

Trump's voters seem to see some positives they like and ignore the other things.  And he isn't an elephant at all; even though he is winning the Republican primary.  And his voters don't really care about that, either.  

That's what really scares the Republican establishment; the voters don't care about them.