The reluctant reaction of western governments to the AIDS crisis in developing countries is only one example for policy areas where we observe a lack of political action despite a public interest in policy change. The reasons for that lie in the two-stage structure of the political decision-making process: Interest groups influence both the policy choice and the subsequent decision on the level of policy implementation. The lobbies' interest in reform and the\nissue-specific chance for compromise determine the policy choice. The interest groups' failure to agree on political strategies creates reduced incentives to support policy implementation.