“In 1960, a mere 5 percent of Americans said they would be upset if their child married someone from the opposite party. A half century later, that number had exploded eightfold, to 40 percent. Partisanship, in other words, was playing a dividing-line role once reserved for religion and race.”

“In 1960, a mere 5 percent of Americans said they would be upset if their child married someone from the opposite party. A half century later, that number had exploded eightfold, to 40 percent. Partisanship, in other words, was playing a dividing-line role once reserved for religion and race.”

— David Litt