Did poor whites win the election, or did rich whites lose it?
That’s not incorrect, but it is worth complicating. Trump supporters have higher-than-average income. So what trap have we fallen into? As Jamelle Bouie puts it, "Although it’s tempting to treat this as a function of some colorblind anti-elitism, that cannot explain the unity of white voters in this election. Trump didn’t just win working-class whites—he won the college-educated and the affluent."
In other words, Clinton did even worse than Obama did with blue-collar whites, signaling the practical end to Democrats' tenuous hold on the Midwest. She also pinned much of her campaign on the premise that wealthier whites would reject Trump's white supremacist tactics; they didn't.