When and how do elite messages shape mass opinion on international issues? Do informational or partisan components of elite cues dominate? Recent survey experiments offer conflicting insights. We argue that issue context matters, and that the single-issue nature of most survey experiments masks systematic variation in how elite cues affect attitudes across international issues. These effects depend on the baseline distribution of mass opinion on the issues themselves. Two characteristics of underlying opinion prove crucial: first, the share of those not aligned with expert opinion, and second, the degree of partisan polarization. Where polarization is limited, information effects should dominate. Where issues are polarized, information intake should be limited by partisan attribution. We test these hypotheses using nine survey experiments across a range of issues, including the rise of China, climate change, international institutions, and the use of force. At one extreme, all messages—even those endorsed by generic or opposition experts—can shift opinion; at the other, only partisan-attributed messages matter. Our findings are important not only for understanding public opinion about international issues but also for those interested in mobilizing opinion in a democratic setting.

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