Replication Data for: Investment Without Return Investment Without Return? Individual Out-of-State Contributions to US Direct Democracy Campaigns

The attached files include the datasets and R analysis code for replication of Investment Without Return Investment Without Return? Individual Out-of-State Contributions to US Direct Democracy Campaigns. See README for description.附带文件包含用于复现《无回报的投资？美国直接民主竞选活动中的个人跨州捐款》研究的数据集与R语言分析代码，请参阅README文件以了解详情。