We are a cross-university research lab (Dartmouth College, University of Pennsylvania and Stanford University). The lab exists to serve as a nexus for work on affective polarization, social trust, and political violence.

Our lab focuses on addressing the following critical questions:

  • What are the principal causes of affective polarization and what can be done to treat it?
  • When and where does affective polarization alter behavior? Why?
  • How effective and durable are approaches to reducing affective polarization?

Explore what we do

America’s Political Pulse

Plot and analyze trends in American political animosity measured with out data. Free and open datasets are also available.

Apply for survey time

Similar in spirit to TESS, we are looking for innovative work on polarization, democratic/social norms, and political violence (all broadly defined).  Proposals will be evaluated solely on scientific merit and will be awarded based on available survey space.  Selected proposals will be fielded on YouGov as part of our weekly tracking survey.

Annual meeting

At our meetings we bring together established scholars, graduate students, community groups and funders for a conference designed to highlight emerging academic work and to develop a network of academics and practitioners focused on the problem of partisan animosity.

Latest news

Where Do Election Skeptics See Fraud Determining Election Results?
We asked our respondents in a period of three weeks after the election in which states they thought fraud determined the 2022 midterm outcome. Among those who think fraud …
Views on the Accuracy of the 2022 Midterms
We asked people about the accuracy of the 2022 midterms before and after the election. On average, Democrats always agreed that the election would/will reflect the preferences of those who …
Perceptions on Voter Fraud in the 2022 Midterms
We asked approximately 6,000 Americans if they thought voter fraud occurred in the 2022 midterms. Despite a consistent lack of evidence, large numbers of Americans think the midterms were marred by fraud: …
Misinformation on Support for Political Violence
Our survey data show that citizens overestimate support among the opposing party for democratic norm violations by up to 48.7 percentage points. We recently added questions to capture differences between actual support for …
State-level Variation in Affective Polarization
Harnessing our massive set of survey interviews and MRP (Mulitilevel Regression and Post-Stratification), we generated state-level estimates of affective polarization. Though affective polarization remains high across the nation, it does …