What we call the "partisan connection"-the bridge parties build between the people and the formal polity-entails sympathizing with citizens' suspicions and fears (though not recklessly stoking them). However, loosening the partisan connection and "speaking truth to conspiracy" is sometimes a moral and political imperative when conspiracy charges come from party leaders' constituents and fellow partisans. We consider epistemological challenges that make it difficult to assess whether conspiracy claims are warranted, and we consider political challenges to assessing the validity of conspiracy claims that are posed by the secrecy, misleading partial truths, obscurantism, and lying that are endemic to politics. Finally, we propose three standards for responsible party officials to use when judging whether to oppose conspiratorial claims: when they are fueled by hatred of certain groups; when they represent the opposition as treasonous and illegitimate; and when conspiracism extends to authority generally, especially expert authority, thereby undermining the basic work of government decision making.