Political Polarization

NEW YORK TIMES BESTSELLER An insider account of activists, politicians, educators, and everyday citizens working to change minds, bridge divisions, and fight for democracy—from disinformation fighters to a leader of Black Lives Matter to Bernie Sanders and Alexandria Ocasio-Cortez and...

As American politics descends into a battle of anger and hostility between two groups called "left" and "right," people increasingly ask: What is the essential difference between these two ideological groups? In The Myth of Left and Right, Hyrum Lewis and Verlan Lewis provide the surprising answer: nothing. As the authors argue, there is no enduring philosophy, disposition, or essence uniting the various positions associated with the liberal and conservative ideologies of today.

Increasingly, political parties have adopted not only different policies, but different sets of facts. As E. J. Fagan argues, partisan think tanks have helped create these alternate realities in their capacity as de facto formal party organizations. Through the analyses generated by aligned think tanks, political elites on both the left and right frequently offer radically different assessments of a policy's consequences.

Not only do individuals have core beliefs about what the government should or should not do, but individuals have become more likely to support the party that best matches their policy attitudes by both identifying as a member of that party and voting for that party in elections. However, as Zingher demonstrates, voters' ability to match their attitudes to a party or candidate varies according to signals sent by elites and increases as parties become more polarized.