In a recent article, Kolko divided the largest cities into 32 “red” metros where Romney got more votes than Obama in 2012 (e.g. Houston), 40 “light-blue” markets where Obama won by fewer than 20 points (e.g. Austin), and 28 “dark-blue” metros where Obama won by more than 20 points (e.g. L.A., SF, NYC). Although all three housing groups faced similar declines in the recession and similar bounce-backs in the recovery, affordability remains a bigger problem in the bluest cities.
Super-Liberal Cities, Super-Unaffordable Houses
“Even after adjusting for differences of income, liberal markets tend to have higher income inequality and worse affordability,” Kolko said.
Kolko’s theory isn’t an outlier. There is a deep literature tying liberal residents to illiberal housing policies that create affordability crunches for the middle class. In 2010, UCLA economist Matthew Kahn published a study of California cities, which found that liberal metros issued fewer new housing permits. The correlation held over time: As California cities became more liberal, he said, they built fewer homes.
“All homeowners have an incentive to stop new housing,” Kahn told me, “because if developers build too many homes, prices fall, and housing is many families’ main asset. But in cities with many Democrats and Green Party members, environmental concerns might also be a factor. The movement might be too eager to preserve the past.”