People forget that prior to June 2015 Trump had a lifestyle that few of us can imagine that was the result of a lifetime of hard work and business acumen. He put that aside and exposed himself and his family to taunts, ridicule, and threats from all sides. Nobody puts themselves or their families through that "for fun".
The more people see him, the more they see for themselves that he's the "real deal". And that's why his message can reach everyone yearning for real change. He doesn't see them as another "voting block" but as individuals and communities who all want a real share in the American dream.
Very well put, AB. Spot-on.