Our geographic divides are central to contemporary politics, including the election of Donald Trump. Election maps show dense liberal cities in a sea of sparsely-populated Red, advantaging Republicans in our geographic electoral system. Why are Democrats concentrating in cities? Jonathan Rodden finds increasingly concentrated left parties around the world, disadvantaging liberal cities. It started with unionized industrial railroad hubs but accelerated with the changing cultural values of the party’s new coalitions. Will Wilkinson finds urban and rural areas are becoming economically and psychologically distinct, with cities concentrating those open to new experience and working in the technology-driven economy and rural areas retaining those averse to social and economic change.

Studies: "Why Cities Lose" and "The Density Divide"

Interviews: Jonathan Rodden, Stanford University; Will Wilkinson, Niskanen Center

Photo used is in the public domain: https://en.wikipedia.org/wiki/2016_United_States_presidential_election#/media/File:United_States_presidential_election_results_by_county,_2016.svg