It's simple: he's famous. He isn't even the first public personality the US voted.
The (sadly) most important thing for a campaign is charisma, and people from decades prior (AKA the ones that actually vote) see Trump and think of the times with The Apprentice, or any variety of commercials he's been in, or some talk show he was on. That mixed with an increasing distrust of the establshment and you get Trump 45.
Trump 47, similar vibes + the "I was richer under Trump" mentality. These are short-sighted, but common sentiments.
The (sadly) most important thing for a campaign is charisma, and people from decades prior (AKA the ones that actually vote) see Trump and think of the times with The Apprentice, or any variety of commercials he's been in, or some talk show he was on. That mixed with an increasing distrust of the establshment and you get Trump 45.
Trump 47, similar vibes + the "I was richer under Trump" mentality. These are short-sighted, but common sentiments.