The geographic embedding of online echo chambers: Evidence from the Brexit campaign
Open accessAbstract
This study explores the geographic dependencies of echo-chamber communication on Twitter during the Brexit campaign. We review the evidence positing that online interactions lead to filter bubbles to test whether echo chambers are restricted to online patterns of interaction or are associated with physical, in-person interaction. We identify the location of users, estimate their partisan affiliation, and finally calculate the distance between sender and receiver of @-mentions and retweets. We show that polarized online echo-chambers map onto geographically situated social networks. More specifically, our results reveal that echo chambers in the Leave campaign are associated with geographic proximity and that the reverse relationship holds true for the Remain campaign. The study concludes with a discussion of primary and secondary effects arising from the interaction between existing physical ties and online interactions and argues that the collapsing of distances brought by internet technologies may foreground the role of geography within one's social network.
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Similar results are known for other communities (e.g., the Brexit leave campaign).
“Similar results are known for other communities (for instance, the Brexit leave campaign40).”
From No echo in the chambers of political interactions on Reddit (2021) · cites this paper as [40]
Brexit-related echo chambers had strong geographic and offline community influences.
“Bastos et al. [90] demonstrated that Brexit-related echo chambers had strong geographic and offline community influences, highlighting the interplay between online and offline environments.”
From A systematic review of echo chamber research: comparative analysis of conceptualizations, operationalizations, and varying outcomes (2025) · cites this paper as [90]
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Self-citation
- Authors
- Bastos, M., Mercea, D., & Baronchelli, A.
- Affiliations
- University of London (GB)
- Corresponding author
- Bastos, Marco
- Venue
- PLOS ONE
- Publisher
- Public Library of Science (PLoS)
- Published
- 2018-11-02
- Volume
- 13
- Issue
- 11
- Pages
- e0206841
- ISSN
- 1932-6203 (ISSN-L)
- PMC
- PMC6214567
- OpenAlex
- W2899324216
- Cited by
- 68
- References
- 4
- Citations by year
- 2026: 4 · 2025: 12 · 2024: 8 · 2023: 11 · 2022: 5 · 2021: 11 · 2020: 11 · 2019: 6
- FWCI
- 15.30
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- PLoS ONE (publishedVersion, cc-by)
- SSRN Electronic Journal (acceptedVersion)
- Europe PMC (PubMed Central) (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- City Research Online (City University London) (acceptedVersion)
- RePEc: Research Papers in Economics (submittedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- School of Arts and Social Sciences of City, University of London (Research Pump-Priming Fund #90608SS)
- Topics
- Social Sciences › Communication › Social Media and Politics
- Social Sciences › Sociology and Political Science › Misinformation and Its Impacts
- Social Sciences › Sociology and Political Science › Media Influence and Politics
- Keywords
- echo chambers, filter bubbles, Twitter, geographic proximity, online polarization, retweets and mentions, partisan affiliation
- MeSH terms
- Communication, European Union, United Kingdom, Humans, Politics, Social Support, Internet, Social Networking, Social Media
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