We study multi-district legislative elections between two office-seeking parties when the election pits a relatively strong party against a weaker party ; when each party faces uncertainty about how voter preferences will evolve during the campaign; and, when each party cares not only about winning a majority, but also about its share of seats in the event that it holds majority or minority status. When the initial imbalance favoring one party is small, each party targets the median voter in the median district, in pursuit of a majority. When the imbalance is moderate, the advantaged party continues to hold the centre-ground, but the disadvantaged party retreats to target its core supporters; it does so to fortify its minority share of seats in the likely event that it fails to secure a majority. Finally, when the imbalance is large, the advantaged party advances toward its opponent, raiding its moderate supporters in pursuit of an outsized majority.

中文翻译：

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争夺基地

我们研究两个办公寻求双方之间的多区议会选举时选坑对一个较弱的一方相对较强的一方; 当各方在竞选过程中如何面对选民偏好的不确定性时；并且，当每一方都不仅在乎赢得多数席位，而且在乎拥有多数席或少数席位时，其席位份额也很重要。当有利于一个政党的初始失衡很小时，每个政党都以中位数选区为目标，以中位数选区为目标。在失衡适度的情况下，优势党继续保持中心地位，但劣势党撤退以其核心支持者为目标；它这样做是为了加强它在少数席位中的席位，如果它未能获得多数席位的话。最后，当失衡很大时，