How voters choose under the Borda rule: evidence from a post-election survey experiment in Germany 2025
通过2025年德国大选后的在线调查实验，研究了博尔达计分法下选民的投票行为，发现考虑更多排名会导致选举结果更碎片化，且该方法对选民与议会的政策一致性影响不一，选民接受度中等偏负面。
Abstract The Borda count offers a promising alternative to counteract the growing polarization of party systems by incentivizing moderate party strategies. However, empirical evidence on the Borda count is still lacking. This paper presents results from an online survey conducted in the aftermath of the 2025 German federal election, in which respondents were asked for their vote choice under a Borda count system. Participants were randomly assigned to one of two conditions: in the first, they could rank up to three out of seven parties; in the second, they could rank all seven parties. The findings show that more ranks considered, the more fragmented the election result. It also shows that the Borda count has mixed effects on policy congruence between voters and parliament. Respondents’ overall acceptance of the Borda rule was moderate to negative, with many of the objections cited were based on misconceptions about the system’s consequences.