Ever since Hillary Clinton lost to Donald Trump in the 2016 presidential election, political spectators have been wondering how it happened. She was supposed to win by a landslide. Now Democrats are debating which of their candidates is most "electable." They're afraid to nominate another Hillary Clinton. But no one can agree on why she lost. Was it because of globalization, sexism, populism, or Russian interference? Eighty-four years of electoral history show that Trump's victory was not at all surprising. In fact, it was entirely predictable. In our forthcoming book, Personality Wins: Who Will Take the White House and How...