The Great Divide: Drivers of Polarization in the US Public
arXiv:2001.05163 · doi:10.1140/epjds/s13688-020-00249-4
Abstract
Many democratic societies have become more politically polarized, with the U.S. as the main example. The origins of this phenomenon are still not well-understood and subject to debate. To better understand the mechanisms underlying political polarization, we develop a mathematical framework and employ information-theoretic concepts to analyze empirical data on political polarization that has been collected by Pew Research Center from 1994 to 2017. Our framework can capture the evolution of polarization in the Democratic- and Republican-leaning segments of the U.S. public and allows us to identify its drivers. Our findings provide empirical and quantitative evidence that political polarization in the U.S. is mainly driven by strong and more left-leaning policy/cultural innovations in the Democratic party.
arXiv comment23 pages, 10 figures
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