Evidence map›Paper›PMID 40881318›Full record

ArticleAmerican journal of political science2025

Political diversity in U.S. police agencies.

Bocar Ba, Haosen Ge, Jacob Kaplan, Dean Knox, Mayya Komisarchik, Gregory Lanzalotto, Rei Mariman, Jonathan Mummolo, Roman Rivera, Michelle Torres

Abstract read
In one paragraph

Article in American journal of political science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

  1. Article
  2. Late adolescents entering college intending a career as police officers hold more right-leaning views than their peers.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  3. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Bocar BaDepartment of Economics, Duke University, Social Sciences Building, Durham, North Carolina, USA.
Haosen GeWharton AI & Analytics Initiative, Analytics at Wharton, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
Jacob KaplanSchool of Public and International Affairs, Princeton University, Princeton, New Jersey, USA.
Dean KnoxOperations, Information and Decisions Department, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
Mayya KomisarchikDepartment of Political Science, University of Rochester, Rochester, New York, USA.
Gregory LanzalottoOperations, Information and Decisions Department, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
Rei MarimanData Computing and Research Support, Analytics at Wharton, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
Jonathan MummoloDepartment of Politics, School of Public and International Affairs, Princeton University, Princeton, New Jersey, USA.
Roman RiveraInstitute for Research on Labor and Employment, University of California, Berkeley, California, USA.
Michelle TorresDepartment of Political Science, University of California, Los Angeles, California, USA.

Funding

Science CoreP2CHD065563 · NICHD · DUKE UNIVERSITY · PI James Moody · 2015 to 2026
$5.7M
NICHD NIH HHS P2C HD065563
6 · The paper itself

Abstract

Partisans are divided on policing policy, which may affect officer behavior. We merge rosters from 99 of the 100 largest local U.S. agencies-over one third of local law enforcement agents nationwide-with voter files to study police partisanship. Police skew more Republican than their jurisdictions, with notable exceptions. Using fine-grained data in Chicago and Houston, we compare behavior of Democratic and Republican officers facing common circumstances. We find minimal partisan differences after correcting for multiple comparisons. But consistent with prior work, we find Black and Hispanic officers make fewer stops and arrests in Chicago, and Black officers use force less often in both cities. Comparing same-race partisans, we find White Democrats make more violent crime arrests than White Republicans in Chicago. Our results suggest that despite Republicans' preference for more punitive law enforcement policy and their overrepresentation in policing, partisan divisions often do not translate into detectable differences in on-the-ground enforcement.

Identifiers

PMID40881318
PMCPMC12383486

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.