当选政治家与其选民有多相似？来自在线社交网络的定量证据
How Similar Are Elected Politicians and Their Constituents? Quantitative Evidence From Online Social Networks
AI总结：
本文利用美英选区级Twitter和Nextdoor数据，比较当选政治家与选民在线话语的相似性，发现相似度受选举胜负幅度和选区收入水平影响，而非政治立场左右。
摘要：
政治家与投票给他们的人有多相似？这是民主代表制核心的一个关键问题，在政治不满和民粹主义抬头之际尤其具有现实意义。为了回答这个问题，我们比较了当选政治家及其选民的在线话语。我们收集了一个涵盖美国和英国、时长两年半（2020年9月至2023年2月）的选区级数据集，其中包括：（i）当选政治代表的Twitter时间线（560万条推文），涉及595名英国下议院议员和433名美国众议员；（ii）选区的Nextdoor帖子（2180万条帖子），覆盖98.4%的美国选区和91.5%的英国选区。我们发现，无论一个选区选出的是右翼还是左翼政治家，当选政治家在内容和风格上往往与其选民具有同等的相似性。选举胜利的幅度和选区的收入水平呈现出一种微妙的图景。选举胜利幅度越小，风格越相似，而内容越不相似。选区收入越低，内容越相似。在风格方面，较贫困的选区往往具有更相似的情感倾向和更不相似的心理文本特征（即用LIWC类别测量）。
英文摘要：
How similar are politicians to those who vote for them? This is a critical question at the heart of democratic representation and particularly relevant at times when political dissatisfaction and populism are on the rise. To answer this question we compare the online discourse of elected politicians and their constituents. We collect a two and a half years (September 2020 - February 2023) constituency-level dataset for USA and UK that includes: (i) the Twitter timelines (5.6 Million tweets) of elected political representatives (595 UK Members of Parliament and 433 USA Representatives), (ii) the Nextdoor posts (21.8 Million posts) of the constituency (98.4% USA and 91.5% UK constituencies). We find that elected politicians tend to be equally similar to their constituents in terms of content and style regardless of whether a constituency elects a right or left-wing politician. The size of the electoral victory and the level of income of a constituency shows a nuanced picture. The narrower the electoral victory, the more similar the style and the more dissimilar the content is. The lower the income of a constituency, the more similar the content is. In terms of style, poorer constituencies tend to have a more similar sentiment and more dissimilar psychological text traits (i.e. measured with LIWC categories).
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
