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州议会中的杰利蝾螈(操纵选区划分):来自公理化讨价还价的摩擦

Gerrymandering in State Legislatures: Frictions from Axiomatic Bargaining
American Economic Journal: Economic Policy · 2022 · Hisam Sabouni、Cameron A. Shelton

中文摘要

党派性选区重划理论假定,各党作为统一行动的整体行为者,最大化本党的预期席位份额。然而,对数量固定的支持本党的选民进行分配,必然意味着公地悲剧。我们将党派性选区重划重新刻画为掌控选区划分的政党内部现任议员之间的讨价还价博弈。现状构成威胁点,这解释了为何变动往往幅度较小。这一讨价还价框架意味着,如果竞争高度激烈的选区已由掌控选区划分的政党的议员代表,那么这些选区将从选区重划中获得更多帮助。我们采用断点回归设计(RDD),利用投票区级数据,发现了支持这一预测的证据。

Abstract

Theories of partisan redistricting postulate unitary actors maximizing their party’s expected seat share. Yet, the partition of a fixed supply of friendly voters necessarily implies a tragedy of the commons. We recast partisan redistricting as a bargaining game among the sitting representatives of the party controlling the map. The status quo is the threat point, explaining why changes are frequently minor. This bargaining framework implies that highly competitive districts will receive more help from redistricting if they are already represented by the party in charge. Employing a regression discontinuity design with precinct-level data, we find support for this prediction. (JEL C78, D72)
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