O Other, Where Art Thou? Support for Multiparty Politics in the United States

Objective. We test hypotheses about support for multiparty politics in the United States. We expect that individual‐level attitudes and state‐level partisan context determine who supports having more parties. Methods. Survey data are used to model attitudes about having additional parties to challenge Democrats and Republicans. Results. Self‐identified partisans are opposed to additional parties, but independents who “lean” toward a major party are most supportive. Independents who say they are closer to Democrats, as well as independents who say they are closer to Republicans, tend to support having new parties. The latter effect is contingent on a state's partisan context. Independents closer to Republicans are most receptive to additional parties in states where fewer conservative representatives are elected. Conclusions. Support for multiparty‐ism among “leaning” independents challenges our understanding of how they may be similar to partisan identifiers, and illustrates that a base for new parties may exist in the “mainstream” public if electoral rules were changed.