Replication Data for: Support for strategic voting campaigns: Evidence from a survey experiment during the German General Election of 2021

Paper is forthcoming in the Politische Vierteljahresschrift (PVS) Abstract: Although strategic voting is common in the first tier of the German electoral system, large-scale campaigns designed to foster strategic voting have rarely been observed in Germany. This changed in the General Election of 2021 when the left-wing organization Campact ran campaigns in several electoral districts supporting the most promising left-wing candidate in order to impede the election of a more right-wing candidate. Especially Campact's campaign in favor of the SPD candidate Frank Ullrich, with the goal of impeding the election of the controversial CDU candidate Hans-Georg Maaßen, received much public attention. Drawing on this case as an example, I address the question of how Green voters evaluate such campaigns. To do so, I conducted a survey experiment in which different information about the campaign of Campact is provided to Green voters. I find that providing more information about the German electoral system does not increase support for the campaign. However, Green voters react to a party cue, i.e. they become more favorable of the campaign when they know that the Green Party supported the campaign.

本文即将发表于《政治季刊》（Politische Vierteljahresschrift，简称PVS）。摘要：尽管策略投票（strategic voting）在德国选举体系的第一层级中已属常见现象，但旨在推动策略投票的大规模竞选活动在德国却极为罕见。这一局面在2021年德国联邦大选中得以改变：左翼组织Campact在多个选区开展竞选活动，支持最具竞争力的左翼候选人，以阻碍更右翼的候选人当选。其中，Campact支持社会民主党（Sozialdemokratische Partei Deutschlands，SPD）候选人弗兰克·乌尔里希（Frank Ullrich）、旨在阻碍颇具争议的基督教民主联盟（Christlich Demokratische Union Deutschlands，CDU）候选人汉斯-格奥尔格·马森（Hans-Georg Maaßen）当选的竞选活动，更是引发了广泛的公众关注。本文以此案例为研究样本，探讨绿党选民如何评价此类竞选活动。为此，我开展了一项调查实验，向绿党选民提供关于Campact竞选活动的差异化信息。研究结果显示，向选民提供更多关于德国选举制度的信息，并未提升其对该竞选活动的支持度。但绿党选民会对政党线索做出反应：当获知绿党支持该竞选活动时，他们对该活动的好感度会显著提升。