When national governments vote on EU legislative proposals in the Council of the European Union (the Council), what type of public opinion plays a role, under what conditions? Previous literature on the opinion-policy nexus in the EU mostly relies on a single measure of public opinion: public support for EU membership. However, I argue that distinguishing different types of public support for European integration – regime support (i.e. support for EU membership) and policy support (i.e. support for specific EU policies) – is needed to provide a more nuanced answer to the impacts of public support on government decision-making, since regime support and policy support do not necessarily go in sync with each other. In addition, the domestic institutional/electoral factors that can possibly mediate the mass-elite linkages on the European stage have been under-examined. By conducting a logistic regression analysis including all member states of the EU between 1999 and 2021 using Eurobarometer survey and VoteWatch Europe data, I propose that policy support has a stronger effect on government vote decisions in the Council than regime support, hence more explanatory power. When the public's policy support decreases, national governments will cast more opposition votes in the Council in the corresponding policy area. I also argue that the domestic electoral/institutional context of each member state, including electoral systems, multipartism, government composition, EU issue salience, and domestic electoral uncertainty, mediates the opinion-policy nexus in the Council. This research contributes to broadening our understanding of dynamic issue responsiveness in supranational decision-making.