This paper is forthcoming for publication in PS.

In studies of non-majoritarian institutions, there is a widespread idea that political neutrality, epistemic authority, and technical expertise are sources of legitimacy. Empirical studies tend to find that such appeals are effective sources of legitimacy, but theorists are overwhelmingly skeptical of their normative appeal. This paper’s conceptual ambition is to unify the disparate debates under the term technical legitimacy. The paper’s theoretical ambition is to improve on the normative debate on technical legitimacy. Existing defenses fail to robustly satisfy the reasons that ground delegation to non-majoritarian institutions. I propose conditions for accepting technical legitimacy that are reasonably robust against counterfactuals. Technical legitimacy must meet three criteria. Institutions must promote a functionally specified common good; build on sound and undistorted expertise; and, perhaps counterintuitively, contain appropriate venues for value input.