… In general, one of the most challenging aspects of analyzing events in real time is distinguishing temporary blips from long-term trends. Popular pundits and other media figures often tend to overstate the degree to which immediate events portend long-term patterns; as I noted once in another context, “There’s a temptation to assume that everything new in politics is a harbinger of the future. But lots of things are dead ends: They rise, and they go away.” On the other hand, we academics are often prone to the opposite bias, hanging onto existing theories and assumptions past the point when evidence has built up that the world has indeed changed.
When it comes to the geographic polarization of American voters, there’s an unmistakable decades-long trend of divergence between (pro-Democratic) metropolitan areas and (increasingly Republican) rural areas, but also an especially sharp and unprecedented increase in this gap in the 2016 presidential election … CONT.
David A. Hopkins, Boston College