Yes, they want to know where you stand on issues, but they don't need to see your binders and equations.
The opposition will cherry pick and spin the scary sounding parts, and if you do win, when Congress passes the bill, your own side will attack the parts you compromised on.
Of course not. You remember "Change we can believe in." You remember health care, climate change, end the Iraq War, but you don't remember him releasing a 50-page how-to manual.
They want to hear a one sentence pitch on jobs and health care and, more generally, how the fear and anger they've felt under Trump will end.
He may be gaffe-prone. But in a very real way, he is reading the room better than the other candidates on what voters want to hear.