It’s one of the most common refrains in political discourse today: social media is the source of polarization. It’s a difficult proposition to empirically study because companies like Meta and X don’t share their data publicly. Until now.In a landmark series of papers, three in Science and one in Nature, Princeton political scientists Andy Guess and a massive team of researchers were given unique access by Meta to study how the platform and algorithms affected users’ attitudes and behaviors during the 2020 election. The findings are surprising and fascinating, even as the project itself raises intriguing questions about how to conduct research on a company in partnership with that very same company.

There is no political topic that can get people’s blood boiling quite like partisan gerrymandering. Many even go so far as to call it an afront to our democracy. But what do we know about how effective it is and what the data shows about its outcomes?In a new paper, “Widespread Partisan Gerrymandering Mostly Cancels Nationally, But Reduces Electoral Competition” Princeton political scientist, Kosuke Imai, uses a novel methodological approach to try and document the effect of partisan gerrymandering. What he finds is surprising and may lead people who participate in it to re-think whether it’s worth the effort.Link to paper: https://www.pnas.org/doi/10.1073/pnas.2217322120

The assumption in political science has always been that electing challengers can lead to a downturn in performance. It takes time to do all the hiring involved in establishing a new government, and there is always a learning curve about processes and procedures. But a surprising new paper shows the opposite might be true.In “Electoral Turnovers”, Boston University economist Benjamin Marx uses a vast new data set to show that ousting the incumbent always seems to lead to improved performance, especially economic performance.Paper: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4039485

The common refrain in political coverage today says that each side of the aisle is living in an information bubble. There is a partisan knowledge gap between the facts Democrats know and the facts Republicans know. May believe this gap could be the downfall of our democracy. But what if that gap isn’t as large as we think?In a new paper by independent researcher, Gaurav Sood, titled “A Gap In Our Understanding? Reconsidering the Evidence for Partisan Knowledge Gaps” he finds that the way we study knowledge gaps is flawed, and that differences in factual knowledge may not be as high as supposed.Paper Link: https://www.gsood.com/research/papers/partisan_gap.pdf

There’s a long tradition in political science of using voter rationality to test the health of our democracy. But could this myopia be misguided? Are there any situations where irrational and uninformed voters could actually generate a healthier democracy?We’re taking a short summer break to catch up on some incredible episodes we have in the works. But in the meantime, we’re going to re-share some of our prior conversations that we think are the most vital and fascinating. Thanks for listening and we’ll see you soon with new episodes of Not Another Politics Podcast.