Experience and the distribution of portfolio payoffs in the European Commission

. This article tests four theories of portfolio distribution within the European Commission and assesses whether experience plays a role in the process of allocating policy responsibilities. The share of portfolios that each Member State is assigned, through its Commissioners, is strongly related to its resources and voting power, as predicted by the proportionality norm and bargaining theory, respectively. Additionally, Member States with Commissioners that have experience in the relevant portfolios are assigned shares that are significantly above what one may expect from these two theories. For half of the portfolios, Commissioners have moderate views along the dimension of the policy they manage, but appointed Commissioners also have significantly more experience in both supranational portfolios and similar national portfolios than the median Commissioner. The difference in experience in supranational and, more weakly, national portfolios significantly accounts for the difference in preference between the appointed and the median Commissioner. Finally, salience matters as well. Left/right leaning Commissioners are significantly more likely to be assigned portfolios with a left‐wing/right‐wing ideological profile, but this strong relation disappears for Commissioners with above average experience in the Commission, in the relevant supranational portfolios or in national governments.