Echo Chambers: Voter‐to‐Voter Communication and Political Competition

Monica A. Giovanniello

Economics and Politics, 2025, vol. 37, issue 2, 752-768

Abstract: I study how strategic communication among voters shapes both political outcomes and parties' advertising strategies in a model of informative campaign advertising. I show that echo chambers arise endogenously as a product of strategic communication. Surprisingly, a small ideological distance between voters is not sufficient to guarantee that a chamber is created, biases' direction plays a crucial role.

Date: 2025
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