Doug Ogden doesn’t know what to do. The 75-year-old retired law enforcement officer is disgusted by President Donald Trump. But he can’t imagine voting for a Democrat in 2020, either. A self-described independent in South Carolina, Ogden doesn’t recognize the modern-day Democratic Party. “The state of the Democratic Party is wild against wilder,” says Ogden, standing with his arms crossed at a recent town hall meeting for Democratic presidential hopeful Pete Buttigieg. “It scares me.” At the core of Ogden’s concern is a broader question about the direction of the Democratic Party and its values in the age of Trump....