Congressional Polarization (IMAGE)

Michigan State University

Congressional Polarization

Caption

"The partisanship of the largest coalition in the (A) US House of representatives and (B) US Senate, from the session starting in 1979 to the session starting in 2015. Until the late 1990s, bipartisan coalitions were common, but during the 21st century coalitions have been almost entirely partisan."

Credit

Z. Neal, Michigan State University; S. Aref, Max Planck Institute for Demographic Research

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