Replication Data for: Multilateral Messaging: International Organizations, Populism, and Social Media

International organizations (IOs) face unprecedented attacks on their legitimacy and authority from hostile domestic publics. Yet modern communication channels like social media allow IOs to interface directly with the public, offering a potential opportunity to enhance their reputations. We investigate the communication strategies IOs adopt to shore up public support in the wake of populist challenges and whether such messages are effective. We argue that IO efforts to highlight their ties to ordinary people increase engagement and political support from public audiences. To test our hypothesis, we use novel Twitter (now X) data from 2012-2022 paired with an original survey experiment of U.S. citizens that manipulates whether IOs are portrayed as technocratic or populist-friendly organizations. Our findings suggest that rhetorical style shapes which dimensions of IO support are mobilized: populist appeals generate political and distributive support, while technocratic appeals reinforce perceptions of competence. Our results highlight IOs' agency in the social media age and suggest that they possess informational tools to blunt populist opposition.国际组织（International Organizations, IOs）正面临来自敌对国内公众对其合法性与权威的前所未有的冲击。然而社交媒体等现代传播渠道使得国际组织能够直接与公众互动，为其提升声誉提供了潜在契机。我们研究了国际组织在面对民粹主义挑战时，为巩固公众支持所采用的传播策略，以及此类传播信息是否有效。我们认为，国际组织强调其与普通民众联系的举措，能够提升公众受众的参与度与政治支持度。为验证我们的假说，我们使用了2012年至2022年间的全新推特（现更名为X）数据集，并搭配一项针对美国公民的原创性调查实验——该实验通过变量操控，将国际组织分别描绘为技术官僚型或民粹主义亲和型组织。我们的研究结果表明，修辞风格会影响国际组织获得支持的维度：民粹主义诉求能够激发政治支持与分配性支持，而技术官僚式诉求则会强化公众对其专业能力的认知。我们的研究结果凸显了社交媒体时代国际组织的主观能动性，并表明其拥有可用于削弱民粹主义反对声的信息工具。