"Married, they could have capitalized on their across-the-aisle relationship — made it their 'brand,' a la James Carville and Mary Matalin, with a book deal or a TV gig perhaps."

"But anything like that, Mary Katharine said, would have felt false. They weren’t at complete opposite ends of the spectrum; they weren’t even sure they believed in a spectrum. They were fiercely independent, just as they wanted their kids to be. Making themselves a bipartisan sideshow would only get in the way."

From "She was a conservative pundit. He was a liberal activist. At home, none of that mattered."

ADDED: Here's audio from a 2011 radio show with Jake Brewer and Mary Katharine Ham talking about the "dumb" political arguments they've had.