In the 2020 election, white voters will make up less than 67% of all eligible voters, according to projections made by the Pew Research Center and released this week. It marks the first time in American political history that white voters are less than seven in 10 of all eligible voters in a presidential election. That's a significant moment in the changing face of America -- and has potentially massive consequences for our politics. White voters have long been a bulwark of the GOP coalition in national races while nonwhites have become increasingly Democratic over the years. At the same...