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There's enough exceptions to this broad constraint though that partisan lean may not be a terribly relevant factor. As an example, Kalamazoo, Michigan is one of the cheapest cities according to several surveys, and the city is a modest left lean in a modest left state. (I actually can't think of too many hugely expensive cities in the Midwest, to be honest...)

Basically, without data comparing several possible relevant variables along with the actual statistical correlation the factor represents, these types of discussions are IMHO useless.

SF is not currently space constrained, only area constrained. They could build upwards if they wanted, but most of the city doesn’t allow buildings over 4 stories. Building up and having a functioning public transportation system would at least allow more people to live in SF, if not solve the housing price problem.

> SF is space constrained

Paris has a population density 3 times that of SF. Manhattan has 4 times.