The NY Times reviews Trump's appeal to LOTS of Americans.
A review of public polling, extensive interviews with a host of his supporters in two states and a new private survey that tracks voting records all point to the conclusion that Mr. Trump has built a broad, demographically and ideologically diverse coalition, constructed around personality, not substance, that bridges demographic and political divides. In doing so, he has effectively insulated himself from the consequences of startling statements that might instantly doom rival candidates.
In poll after poll of Republicans, Mr. Trump leads among women, despite having used terms like "fat pigs" and "disgusting animals" to denigrate some of them. He leads among evangelical Christians, despite saying he had never had a reason to ask God for forgiveness. He leads among moderates and college-educated voters, despite a populist and anti-immigrant message thought to resonate most with conservatives and less-affluent voters. He leads among the most frequent, likely voters, even though his appeal is greatest among those with little history of voting.
"Right now I don’t have a second choice," [one Trump supporter] said. "They all blend in to me. It’s Donald Trump — and everyone else."
"My second choice," he added, "might be staying at home."