Not for Members Only: Group Endorsements as Electoral Information Cues

Abstract

Endorsements by groups in American politics have typically been studied as voting cues only for members of the given organization. Using both the formal theoretical and low-information cognitive voting literatures, this article argues for a broader electoral role for group endorsements. Specifically, if groups that have clear ideological or policy preferences endorse candidates, these endorsements should provide all voters with ideological or issue information about the endorsed candidates. This inferred information should then impact voters’ behavior, especially in low-information scenarios. Using both an experimental test and a test with American National Election Studies (ANES) survey data, this study analyzes the hypothesis in terms of elections to the U.S. House of Representatives. It finds that when the AFL-CIO endorses Democratic candidates, voters behave as though a liberal message has been sent—liberals are significantly more supportive while conservatives are significantly less supportive than they are when no endorsement is given, regardless of whether or not they are union members. At the same time, however, the analysis finds no support that endorsements of Republicans have any ideological impact on voting.

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