At last week’s WelcomeFest, Matt Yglesias, the longtime blogger turned centrist Substacker, moderated a panel with two Democratic members of Congress from big blue states—Tom Suozzi, who represents part of Long Island, New York, and Adam Gray, who hails from California’s San Joaquin Valley. He ended up making a remark that immediately struck me. I’ve been thinking about it for more than a week. “The problem for Democrats is that most people see great things about California and about New York,