Reformers advocate the use of commissions rather than legislatures to redistrict as a way of promoting less partisan districts and ideologically moderate congressional members. Much of the evidence in political science suggests that gerrymandering is not a cause of congressional polarization, but whether or not commissions produce different types of districts or members remains an important and unanswered question, especially now that many states have adopted reforms. This article examines whether commissions reduce district partisanship or ideological extremity using time-series-cross-sectional data. We find that bipartisan districts promote member moderation, but there is no evidence that commissions have distinct effects on districts or members as compared to districts drawn by legislatures, consistent with the notion that limiting gerrymandering is not a solution for polarization. These conclusions call into question the appropriateness of redistricting reform, especially when one considers the undemocratic nature of commissions.Partisan redistricting occurs when state legislatures redraw district lines every ten years with sophisticated technology which allows them to serve partisan political purposes such as maximizing the number of seats for their party or protecting incumbents. Partisan redistricting results in a lack of competition for congressional seats, the argument goes, which in turn allows members of Congress to move away from the center and toward the ideological edge. McDonald and Altman summarize this claim by saying: "[f]igures from both major parties tilt the electoral playing field so much that one party is essentially assured of winning a given district, controlling the state legislature or winning the most seats in the state's congressional delegation. In other words, the democratic process is subverted. In this system, politicians select voters rather than voters electing politicians" (McDonald & Altman, 2010).