Trump is a non-politician, running as a Republican, but campaigning like a Democrat, matching and even surpassing every assault launched against him by the Clinton campaign. Dems can dish it out but they can’t take it and they are not used to the GOP nominee fighting back.
Quite right, and in that regard Trump speaks for most real Americans. I say "real Americans" because we have voters who are not real Americans.
Of course, it is even worse than that: the Dems are not used to the GOP doing anything but sitting on its hands.
See for instance, House leader Ryan giving O just about everything he asked for. And recall the Republican leadership scolding Joe Wilson for calling O a liar just as O was lying to the Congress and the American people - and then later coercing Wilson into apologizing to O for daring to call him a liar.