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Since Trump was elected, US support for international cooperation of all kinds has climbed sharply, from free trade to overseas assistance. Perhaps Trump’s real MAGA legacy will be Making Americans Globalists Again

🚨 Our latest paper is out today in Science! We uncover stark and systematic partisan differences in the amount, content, and character of science used in policy, which mirror differences in political elites’ trust in science. Four years in the making. Led by Zander Furnas 1/n

I wrote a column in nature with Jonas De keersmaecker about the need for scientists to secure public trust in an age of polarization. A crucial challenge that demands urgent attention is the effect on public health of rising political polarization in many countries. Trust in

Partisanship swamps other factors in determining support for recent policies, even when they seemingly implicate traditional support for free expression. Data from FIRE April 2025 National Speech Index, part of Polarization Research Lab fantastic national panel.

In our latest paper: Democrats and Republicans agree that nearly all LLMs are significantly biased toward Democratic views. Google models are the least biased, but Elon Musk's xAI is perceived as nearly as liberal as OpenAI (the most slanted company)...

A new study by Hoover fellows Justin Grimmer, @SeanJWestwood, and @AHall_Research (Stanford Graduate School of Business) finds that nearly all leading LLMs are viewed as left-leaning—even by Democratic respondents—and that a simple tweak to system instructions reduces this tilt. hoover.org/research/measu…

As the Cornyn-Paxton TX primary heats up, it's a good time to report that my paper with Gall O. Sigler, "Not of Primary Concern: Assessing Ideological Voting over Time in U.S. Primaries, 2008-2024" has been accepted by Political Behavior. Here's a 🧵... 1/n

It's official -- I'll be taking my talents to Foggy Bottom this Fall! Excited to announce I've accepted an offer to join the Department of Political Science at the George Washington University as an Assistant Professor of American Politics!

The courts are trying to constrain Trump, but our polling data show that Republicans are pushing back with growing support for *ignoring* court rulings. Link to data and report in the next post.

See below for a thread on our new working paper on the 2024 congressional primary and general elections. Feedback welcome!

nearly all LLM AI models are perceived as significantly left-leaning, even by many Democrats, across many value-laden political topics. when models are prompted to take a neutral stance, they offer more ambivalence & are perceived as more neutral modelslant.com/paper.pdf

New from Stand Together: Sean Westwood of Polarization Research Lab lays out five questions Americans can ask themselves to move out of extreme, black-and-white thinking and into a world where disagreements can be productive: standtogether.org/stories/consti…

Thinking about immigration from a cultural perspective heightens distrust of political opponents, as discussed in our recent British Jnl Poli Sci. Might interest scholars of affective polarization and ideology, as well as those analyzing open-ended survey questions. cup.org/3ZajcQ1

Americans are polarized on how they think the economy has performed since Trump's election. More than 6 months on, we see Democrats moving from feeling somewhat good to bad and Republicans from bad to good. Data at americaspoliticalpulse.com/citizens/us-po…

New on protest participation from Seth Warner in Social Forces. He finds that partisan animosity explains almost as much variation as concern about the issues being protested, e.g., participation in environmental protests is about the GOP. academic.oup.com/sf/advance-art…

I've launched a new website where anyone can interactively visualize ticket-splitting rates from actual ballots (cast vote records) for any pair of contests on the 2020 Georgia ballot. Check it out! ballots.isps.yale.edu