In developed nations assassinations are rare and thus the impact of such acts on the electoral and political landscape is understudied. In this paper, we focus on Twitter data to examine the effects of Japan's former Primer Minister Abe's assassination on the Japanese House of Councillors elections in 2022. We utilize sentiment analysis and emotion detection together with topic modeling on over 2 million tweets and compare them against tweets during previous election cycles. Our findings indicate that Twitter sentiments were negatively impacted by the event in the short term and that social media attention span has shortened. We also discuss how "necropolitics" affected the outcome of the elections in favor of the deceased's party meaning that there seems to have been an effect of Abe's death on the election outcome though the findings warrant further investigation for conclusive results.

翻译：在发达国家，暗杀事件极为罕见，因此这类行为对选举及政治格局的影响研究不足。本文聚焦于推特数据，考察日本前首相安倍晋三遇刺事件对2022年日本参议院选举的影响。我们利用情感分析、情绪检测及主题建模方法，分析了超过200万条推文，并将其与之前选举周期的推文进行比较。研究结果表明，该事件短期内对推特情感产生了负面影响，且社交媒体注意力持续时间有所缩短。我们还探讨了“死亡政治”如何使选举结果向遇害者所属政党倾斜，这意味着安倍之死似乎对选举结果产生了影响，不过相关发现仍需进一步研究才能得出最终结论。