Policy Uptake as Political Behavior: Evidence from the Affordable Care Act

Partisanship is a primary predictor of attitudes toward public policy. However, we do not yet know whether party similarly plays a role in shaping public policy behavior, such as whether to apply for government benefits or take advantage of public services. While existing research has identified numerous factors that increase policy uptake, the role of politics has been almost entirely overlooked. In this paper, we examine the case of the Affordable Care Act to assess whether policy uptake is not only about information and incentives; but also about politics. Using longitudinal data, we find that Republicans have been less likely than Democrats to enroll in an insurance plan through state or federal exchanges, all else equal. Employing a large-scale field experiment, we then show that de-emphasizing the role of government (and highlighting the market's role) can close this partisan gap.