This study examines the effects of geographical variations in diversity on political communication within the context of partisan media and audiences. Partisan heterogeneity, as an indicator of political diversity, was conceptualized as a geographical context of the distribution of party preferences within a county. Using a set of nationwide panel survey data with county-level statistics, we conducted multilevel modeling to test its effects on partisan news use, political discussion, knowledge, and affective polarization. The results indicate that county-level partisan heterogeneity reduced the average levels of like-minded news consumption. Moreover, it attenuated the positive relationship between like-minded news use and political talk with strong ties. Additionally, we found that the context of partisan heterogeneity significantly moderated the mediation effects of partisan news use on political knowledge and affective polarization through political discussion. Implications of these results on partisan communication were discussed.

中文翻译：

---

生活在多元化的社区：多元化的地理差异对党派沟通的影响


本研究探讨了党派媒体和受众背景下多样性的地理差异对政治传播的影响。党派异质性作为政治多样性的指标，被概念化为一个县内政党偏好分布的地理背景。我们使用一组全国性的面板调查数据和县级统计数据，进行了多层次建模，以测试其对党派新闻使用、政治讨论、知识和情感两极分化的影响。结果表明，县级党派异质性降低了志趣相投的新闻消费的平均水平。此外，它削弱了志同道合的新闻使用和关系密切的政治谈话之间的积极关系。此外，我们发现党派异质性的背景显着调节了党派新闻使用对政治知识和通过政治讨论的情感极化的中介作用。讨论了这些结果对党派沟通的影响。