How Politicians Polarize

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A01=Mia Costa
American democracy
Author_Mia Costa
Bipartisanship
Campaign finance
campaigning
Category=JPFK
Category=JPFM
Category=JPHV
Category=JPL
Civic engagement
Constituent interests
Democratic norms
Divisive tactics
Donor incentives
Electoral rewards
eq_bestseller
eq_isMigrated=1
eq_isMigrated=2
eq_nobargain
eq_non-fiction
eq_society-politics
Ideological divide
Media coverage
Media influence
Negative
Othering
Partisan identity
Partisanship
Party elites
Policy representation
Political accountability
Political communication
Political cynicism
Political discourse
Political ecosystem
Political reform
Political rhetoric
Political strategy
Public opinion
Tribalism
Voter behavior
Voter preferences

Product details

  • ISBN 9780226838946
  • Weight: 340g
  • Dimensions: 152 x 229mm
  • Publication Date: 26 Mar 2025
  • Publisher: The University of Chicago Press
  • Publication City/Country: US
  • Product Form: Paperback
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A fresh examination of political representation in an era of negative partisanship.

What does representation look like when politicians focus on "othering" the opposing party rather than the policy interests of their constituents? How do voters react to negative partisan rhetoric? And is policy responsiveness still the cornerstone of American representative democracy?

In How Politicians Polarize, Mia Costa draws on survey experiments, analysis of congressional newsletters and tweets, and data on fundraising and media coverage to examine how and why politicians rely so often on negative partisan attacks. Costa shows that most Americans do not like negative rhetoric, and politicians know this. Nonetheless, these kinds of attacks can reap powerful rewards from national media, donors, and party elites. Costa’s findings challenge the popular notion that Americans are motivated more by their partisan identities than by policy representation. Her research illuminates how the political ecosystem rewards negative representation and how this affects the quality of American democracy.

Mia Costa is assistant professor in the Department of Government at Dartmouth College, where she is also a faculty associate in the Program in Quantitative Social Science. She has published articles in the American Journal of Political Science, Politics & Gender, Political Research Quarterly, and Political Behavior, among others.

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