American workplaces are more politically divided than previously documented, according to a new analysis that links voter-registration files to tens of millions of online employment profiles. The research assembled the largest dataset to date to measure partisan composition on the job, finding that Democrats and Republicans are significantly more likely to work alongside co‑partisans than random distribution would produce.
Scope and method
The research team combined state voter rolls with more than 100 million public employment profiles and, after extensive cleaning and a novel name‑matching approach using statistical tools and artificial intelligence, identified over 45 million U.S. workers. Their 2024 analytical sample comprised roughly 31 million individuals across 366 metropolitan areas, spanning more than 1,000 industries and 380 occupations. By moving beyond donation‑based measures, the authors say, the dataset captures a far broader cross section of employed Americans.
Key findings and patterns
The researchers highlight four central regularities in the data. Reporting emphasizes:
- Systemic segregation: Partisans are more likely to be colocated at work with co‑partisans than chance would suggest, even after adjusting for where people live, what industry they work in and the occupations they hold.
- Concentration in higher status roles: Segregation is most pronounced among politically engaged employees and those in senior positions.
- Persistence of cross‑partisan ties: Despite measurable clustering, the workplace is not uniformly monolithic — there remains substantial cross‑partisan contact in many settings.
- Nuanced geography and sectoral patterns: Segregation varies across metropolitan areas, industries and occupations, enabling a more precise mapping than prior studies allowed.
Context and consequences
This work reframes the workplace as an arena of political sorting, not merely a neutral space for professional interaction. The findings intersect with broader trends of political lifestyle sorting — by neighborhood, faith community and social circle — but are distinctive because workplaces are sites where Americans spend a majority of their waking hours. That has implications for how political identities are reinforced or challenged in everyday routines, for organizational culture, and for workplace policies on diversity and inclusion.
Because segregation is strongest among politically active and higher‑status employees, the study raises questions about how partisan homogeneity in leadership might shape hiring, promotion and managerial decision‑making. It also bears on efforts to foster deliberation or reduce polarization within organizations: where leadership and influential staff are politically clustered, initiatives to broaden perspectives may face structural headwinds.
What the data mean for policy and research
The study's scale and methodology represent a methodological advance: by linking broad administrative records to employment data and applying advanced matching techniques, it moves the literature beyond narrow samples drawn from political donors or small surveys. For scholars and policymakers, the work provides a more granular baseline to evaluate interventions aimed at increasing cross‑partisan exposure at work, and to study whether workplace political composition affects outcomes such as productivity, retention or civic participation.
| Metric | Value reported |
|---|---|
| Employment profiles linked | 100+ million |
| Individuals identified | 45 million |
| Analytical sample (2024) | 31 million across 366 metros |
| Industries and occupations | 1,000+ industries; 380 occupations |
Future work will be needed to unpack causal mechanisms — for example, whether partisan sorting at work is driven primarily by hiring networks, employee preferences, differential mobility, or by residential and educational sorting that feeds into occupational concentrations. For now, the study provides the most comprehensive map to date of how political identities are distributed across American workplaces.
Policy makers, business leaders and researchers can use these findings to consider how organizational practices and civic norms interact. Where leaders are concentrated within one partisan cohort, the internal dynamics of institutions — from private firms to public agencies — may reflect narrower political frames, with implications for representation and trust.
