Political Adverse Selection

Leonardo Bursztyn, Jonathan Kolstad, Aakaash Rao, Pietro Tebaldi and Noam Yuchtman

No 17440, CEPR Discussion Papers from C.E.P.R. Discussion Papers

Abstract: We study how the politicization of policies designed to correct market failures can undermine their effectiveness. The Patient Protection and Affordable Care Act (ACA) was among the most politically divisive expansions of the US government. We examine whether partisanship distorted enrollment and market outcomes in the ACA insurance marketplaces. Controlling for observable characteristics and holding fixed plans and premiums available, Republicans enrolled less than Democrats and independents in ACA marketplace plans. Selection out of the ACA marketplaces was strongest among Republicans with lower expected healthcare costs, generating adverse selection. Computing enrollment and average cost with and without partisan differences, we find that this political adverse selection reduced enrollment by around three million people and raised average costs in the marketplaces, increasing the level of public spending necessary to provide subsidies to low-income enrollees by around $105 per enrollee per year. Lower enrollments and higher costs are concentrated in more Republican areas, potentially contributing to polarized views of the ACA.

Keywords: Ideology; Health care; Partisanship; Polarization; Affordable care act (search for similar items in EconPapers)
Date: 2022-07
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Working Paper: Political adverse selection (2022)
Working Paper: Political adverse selection (2022)
Working Paper: Political adverse selection (2022)
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